TW201210029A - Preparation of semiconductor films - Google Patents

Preparation of semiconductor films Download PDF

Info

Publication number
TW201210029A
TW201210029A TW100122709A TW100122709A TW201210029A TW 201210029 A TW201210029 A TW 201210029A TW 100122709 A TW100122709 A TW 100122709A TW 100122709 A TW100122709 A TW 100122709A TW 201210029 A TW201210029 A TW 201210029A
Authority
TW
Taiwan
Prior art keywords
precursor
metal
semiconductor
precursors
film
Prior art date
Application number
TW100122709A
Other languages
English (en)
Inventor
Ranjan Deepak Deshmukh
Ralf Kuegler
Joerg Schneider
Rudolf Hoffmann
Original Assignee
Merck Patent Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merck Patent Gmbh filed Critical Merck Patent Gmbh
Publication of TW201210029A publication Critical patent/TW201210029A/zh

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • H01L31/1828Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof the active layers comprising only AIIBVI compounds, e.g. CdS, ZnS, CdTe
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/34Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies not provided for in groups H01L21/0405, H01L21/0445, H01L21/06, H01L21/16 and H01L21/18 with or without impurities, e.g. doping materials
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/1204Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/125Process of deposition of the inorganic material
    • C23C18/1275Process of deposition of the inorganic material performed under inert atmosphere
    • CCHEMISTRY; METALLURGY
    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/02Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
    • C23C18/12Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
    • C23C18/125Process of deposition of the inorganic material
    • C23C18/1295Process of deposition of the inorganic material with after-treatment of the deposited inorganic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02365Forming inorganic semiconducting materials on a substrate
    • H01L21/02518Deposited layers
    • H01L21/02521Materials
    • H01L21/02551Group 12/16 materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02365Forming inorganic semiconducting materials on a substrate
    • H01L21/02518Deposited layers
    • H01L21/02521Materials
    • H01L21/02568Chalcogenide semiconducting materials not being oxides, e.g. ternary compounds
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104Forming layers
    • H01L21/02365Forming inorganic semiconducting materials on a substrate
    • H01L21/02612Formation types
    • H01L21/02617Deposition types
    • H01L21/02623Liquid deposition
    • H01L21/02628Liquid deposition using solutions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/0296Inorganic materials including, apart from doping material or other impurities, only AIIBVI compounds, e.g. CdS, ZnS, HgCdTe
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/032Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/032Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
    • H01L31/0322Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising only AIBIIICVI chalcopyrite compounds, e.g. Cu In Se2, Cu Ga Se2, Cu In Ga Se2
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/032Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
    • H01L31/0324Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising only AIVBVI or AIIBIVCVI chalcogenide compounds, e.g. Pb Sn Te
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/0248Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
    • H01L31/0256Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
    • H01L31/0264Inorganic materials
    • H01L31/032Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
    • H01L31/0326Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising AIBIICIVDVI kesterite compounds, e.g. Cu2ZnSnSe4, Cu2ZnSnS4
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/541CuInSe2 material PV cells
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/543Solar cells from Group II-VI materials
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Photovoltaic Devices (AREA)

Description

201210029 六、發明說明: 【發明所屬之技術領域】 本發明係關於一種製備包含不同金屬(Cu/ln/Zn/Ga/Sn)、 硒及/或硫之半導體無機薄膜之方法。該方法使用含有具 有肟配位體之前驅錯合物之分子金屬。於惰性氛圍、低溫 下製備尚純度Mil-via型銅基黃銅礦。該’等薄膜可用於光 伏打面板(太陽能電池)中。 【先前技術】 光伏打面板一般係由矽晶體或薄膜電池製造。許多現有 太陽能電池係被配置成塊狀材料,其隨後經切割成晶圓及 以「由上而下」合成方法處理,其中矽係最普遍之塊狀材 料。於製造更廉價面板之嘗試中,將其他材料配置成薄膜 (無機層、有機染料及有機聚合物),並沈積於支撐基板 上。 Ι-ΙΙΙ-νΐ2型銅基半導體(黃銅礦型),如CuInSe2(CIS)、 CuIi^SpSebyWCISS)、CuInxGabJSeyA-yWCIGS),係被 廣泛研究作為薄膜太陽能電池之吸收層之半導體e CISS及 CIGS具有可藉由改變in/Ga比或藉由改變S/Se比來調諧以 匹配太陽光譜之直接能隙。CIGS之另一優點係因相較於競 爭CdTe裝置之甚低福含量所導致之較低環境影響。最近, 已證明單接面實驗室規模CIGS太陽能電池可達19.9。/。電力 轉換效率,高於CdTe(16.5%)或a-Si基裝置(12%)(I. Repins 等人,Prog. Photovoltaics,2008,16,235)。 最新型CIGS裝置係由真空製程製得,諸如3_階段式共蒸 156123.doc 201210029 發沈積於腔室内硒源下之金屬。雖然在實驗室規模下具有 高效率,但真空製程之一重大缺點係其等一般需在以或 HzSe氣體之有毒環境下進行硒化步驟。硒化步驟不容小 覷,其會在放大至工業製程規模時產生困難。共蒸發製程 亦會在控制大面積基板上之膜性質上存在困難。真空製程 中所涉及之挑戰係對於通量/沈積速率之高控制要求,以 避免形成中間化合物及獲得受控化學計量。大面積基板上 之膜性質之不良控制會負面影響裝置性能。經蒸發CIGS之 低材料利用率亦因一部分經蒸發材料停留於腔室壁上而增 加成本。CIGS之形成需求超過50(rc之高溫,因而增加熱 成本及令此製程對諸如塑膠之可撓性及輕質基板更具挑戰 性。為解決以上難題,需求CIGS沈積之替代方法。(參見 「Non-vacuum based methods for formation 〇f cu(In, Ga)(Se,S)thin film photovoltaic absorbers」,C. J Hibberd 等人,Prog. Photovolt: Res. Appl.,2009, preview)。 基於溶液之製程較基於真空之製程更具優勢,係因其等 可用於捲轴式大量生產並具有高生產率及藉由1〇〇%之材 料利用率而使成本顯著下降。可藉由浸塗、噴塗、旋塗、 縫塗、滴鑄、刮刀塗覆、喷墨印刷或彈性凸板/凹板印刷 等使用基於溶液之前驅物來沈積吸收層。近來展示一種基 於來自IBM之肼前驅物之CISS及CIGS之溶液沈積方法。 (US 20090145482A1、US 20090121211、WO 1997023004 ; Liu 等人 ’ Chem. Mater” 2010,22,1010-1014 ; Mitzi 等 人,Adv. Mater·,2008,20, 3657)。該製程包括將諸如 156123.doc 201210029
Cu2S,S ; In2Se3,Se ; Ga,Se之化合物以過量的S或Se溶於 肼中;將前驅物沈積於一基板上,接著進行退火步驟以將 前驅物轉化成CISS或CIGS »該製程無硒化步驟,但採用 4 5 0至5 5 0 C之南溫。此方法之另一缺點係肼具劇毒且可 燃’使大量操作下存在安全問題。於一類似方法中,經由 利用Se及乙二胺溶解Cuje或Ii^Se以使用乙二胺前驅物, 而製造Cu2Se/CuInSe2膜(WO 2008063190、WO 2008057119)。 然而’此方法未揭示光伏打裝置效率。 喷霧熱解係另一基於溶液之技術,其中將諸如CuC1、 InCh、GaCh之金屬鹽與硒脲及其等衍生物一起溶於溶劑 中,並喷塗於一熱基板上以製造CIS、CISS*CIGS膜。然 而,此方法已因無法接受之高C、C1及氧化物相雜質濃度 而導致低效率(C. J. Hibberd Prog. Photovolt: Res Appl., 2009 ; WO 8810513 ; JP 3068775A)。 另一具有前景的替代方案係使用分子無機前驅物,其可 分解以形成金屬硫族化合物。(JP 01_298〇1〇 A、 2001274m、;P 11()_9 A)。然而,大部份前驅物之一 共同問題係其等於分解之後會留下諸如c、〇、1^等非所要 元素之殘餘物,進而負面影響裝置性能。 【發明内容】 本發明係關於一種分子無機前驅物與硫族分子或元素源 之混合物’其可藉由加熱乾淨地分解而不會留下任何顯著' 雜質含量’以形成半導體及作為薄膜併人至工作光伏 置中。 ^ 156I23.doc 201210029 本文中’吾人將銅、銦及/或視需要其他金屬與肟配位 體之錯合物(2-羥基亞胺基烷酸鹽或2-烷氧亞胺基烷酸鹽) 用作膜沈積方法之前驅物。此等膜係半導體且可用作光伏 打裝置中之活性元件。 出乎意料地,現已發展出一種方法,其中將包含一或多 種为子無機前驅物及硫族源(硫族=Se、S、Te)之前驅物材 料之組合施用至基板及隨後於低溫下轉化成電活性(即, 導電、半導電及/或絕緣)之材料。 於本發明之一態樣中,揭示一種製造半導體之方法,其 特徵在於 a·組合包含一或多種金屬錯合物與硫族源之前驅物,至少 一金屬錯合物包含來自肟類之至少一配位體,及 b.較佳於惰性環境中,藉由加熱或輻射分解經組合之前驅 物以形成半導體。 根據本發明之硫族源限於硫(s)、硒(Se)及一些程度的碲 (Te)源。氧化物相通常較不佳,因其鮮少為半導電性。 較佳金屬前驅物中之兩者或全部包含來自㈣之一或多 個配位體。可將-或多種金屬用作已知前驅物,包括(例 如)乙醯㈣㈣、乙酸鹽及其他鹽,其較佳無鹵化物。 金屬錯合物較佳係包含視其等價數而定最大數量蔣配位 體’較佳兩或三個肟配位體之金屬肟錯合物。較佳用作肟 鹽之-般金屬包括銅、銦 '鎵、鋅或錫。 於該方法中形成之半導體較佳為Ι-ΙΠ-νΐ2型、ΙΛΓ[型、 ιι-νι型、ιπ·νι型、IV_VI型及更佳為ι抓外型。就剛外 156123.doc 201210029 型半導體而言,使用兩或更多種金屬前驅物。單價金屬較 佳係銅。三價金屬較佳為銦或鎵。可採用此等金屬之混合 物。此外’可以二價與四價金屬之混合物部份或完全交換 三價金屬(I-II-IV-V〗2型半導體,例如,CuZnSnSe2、、
CuZnGeSe2:^二價金屬較佳為鎘或辞,四價金屬較佳 或錫。 則驅物杈佳係以液相組合,較佳係提供組分良好溶解度 之溶劑,及藉此確保金屬與硫族源完全混合。一般而言: 當將混合物施用至一基板並加熱至至少高於溶劑之沸點 時,溶劑會迅速蒸發。因此,於上述方法之步驟(^中,視 需要先蒸發任何溶劑,然後進行分解。用於分解之惰性環 境一般係惰性氣體,如氮氣或氬氣。 較佳地,藉由(較佳)浸塗、喷塗、旋塗、縫塗、滴鑄、 刮刀塗覆、喷墨印刷或彈性凸板/凹板印刷將前驅物混合 物沈積於一基板上,然後分解。以快速蒸發及分解為佳。 於本發明之一較佳態樣中,半導體係藉由喷霧熱解製造。 於本發明之另一態樣中,其亦係關於用於沈積電子組件 之前驅物混合物,特徵在於其包含含有來自肟類之至少一 配位體之至少一金屬錯合物。其較佳不含鹼金屬及鹼土金 屬或鹵素(尤其氣化物)。前驅物混合物較佳係金屬肟鹽及 硫族源於液體載劑中之溶液。該等分子前驅物係極易溶物 質’但該前驅物混合物亦可另包含其他化合物之懸浮小顆 粒。當將金屬前驅物與硒或硫之硫族源組合於一起時,可 於混合前驅物熱分解時產生金屬硫族化合物。 156123.doc 201210029 於本發明方法中,不產生氧化物》半導體材料大部份係 由純金屬硒化物/硫化物相組成。元素0/c/N/cl之雜質含量 遠低於根據先前技藝方法所觀察到者。 術語「不含鹼及鹼土金屬」意指所製備之金屬錯合物中 之驗或驗土金屬含量小於〇.2重量%。 無鹼金屬起始化合物之製備對在電子組件中之用途至關 重要,係因含有鹼金屬及鹼土金屬之殘餘物會對電子性質 具有負面作用。此等元素作為晶體中之外來原子且會對電 荷載子之性質具有不利影響。 於-較佳實施例中’前驅物混合物包含含有前驅物材料 之液相。該液相可藉由利用喷塗、滴铸、浸塗、印刷等轉 移至待塗覆半導體材料之表面而輕胃地力σ卫。該液相較佳 可包含有機溶劑,更佳可溶解前驅物之溶劑,最佳極性_ 非質子性溶劑’如二甲基甲酿胺(卿)、二甲亞颯_s〇) 等’及質子性溶劑,如甲醇、乙醇、2_甲氧基乙醇等。 如上所述,金屬錯合物前驅物包含來自肟類之至少一配 位體。根據本發明,該金屬錯合物中之—或多個配位體較 佳包含Μ甲氧基亞胺基)院酸根、2_(乙氧基亞胺基)烧酸根 或2-(經基亞胺基)烧酸根,更佳為(^至^)貌酸根中之乙 酸根、丙酸根或丁酸根,以丙酸根為最佳。 其 根據本發明之則貞包含2_㈣胺基㈣、r,及r2可變之 等衍生物、及相應陰離子。上下文 r又所私之較佳肟配位體 之一般結構係如下式: 156123.doc 201210029 ,R2
?R Ό、0 其中R係選自Η、CH3或CH2CH3,及R2係選自Η、(^至(:6 烧基、苯基或苄基,較佳Η、Ch3或CH2CH3。肟配位體一 身又係具有一負電荷之螯合配位體β作為螯合配位體,其經 由Ν及其中一個氧原子鍵結至金屬。 銅前驅物較佳係Cu(II)雙肟錯合物。銦前驅物較佳係銦 (III)三肟錯合物◊鎵錯合物較佳係Ga(III)三肟錯合物。 一般的較佳前驅物係(例如)如下所述(方案1,2)
方案l ·銅前驅物1之結構 就前驅物1而言,Ri或R2可係選自(例如)H、CH3、C2H5 等,具有Ri=H及RfCH3之錯合物將稱為含兩個水合水分 子之雙[2-(羥基亞胺基)两酸]銅。 OR. r2 "ο ο 3 方案2·銦前驅物2之結構 156123.doc 201210029 就前驅物2而言,1或尺2可係選自H、c 3 。例 如,具有ReCH3及R2=CH3之錯合物將稱為三[2 (曱氧基亞 胺基)丙酸]銦。鎵前驅物具有經由交換金屬而得之與^ 同的結構。 、 肟基金厲前驅物於空氣中穩定且可輕易溶於諸如甲醇、 乙醇、2-甲氧基乙醇、DMF、DMS〇等之常見有機溶劑 中。 此等金屬前驅物之熱分解溫度低達15〇β(:且分解後之終 產物含有極小量雜質元素,如C、N(<1%)。當個別地分解 時,刖驅物產生金屬氧化物。例如,當於空氣中分解時, 銦前驅物之熱分解產生氧化銦。根據本發明之方法,藉由 添加至J等當量呈適宜形式之硒或硫來防止氧化物形成。 來自肟類之金屬前驅物有一些係自文獻知曉且可如上所 述般製備。較佳應用使用低含量鹵化物之合成方法,例 如,藉由將金屬鹽(經常係函化物)交換成金屬硝酸鹽、硫 酸鹽、乙酸鹽或類似物。就金屬前驅物之製備而言,使酮 基羧酸(較佳丙酮酸)與至少一羥胺或烷基羥胺於無鹼金屬 之鹼的存在下反應,及隨後添加無機金屬鹽(如,例如, 硝酸鹽)。如此一來,首先藉由α_酮酸或酮基羧酸與羥胺 或烷基羥胺於鹼之存在下在水溶液中縮合來合成肟配位 體°然後,於室溫下藉由添加金屬鹽(如,例如,金屬氣 化物或硝酸鹽)而形成金屬前驅物。 所採用之洞基羧酸可具有不同鏈長,但以^至C6羧酸為 較佳。較佳係使用酮基乙酸、酮基丙酸(丙酮酸)或酮基丁 156123.doc 201210029 酸。 所採用之無鹼金屬之鹼較佳為碳酸氫烷基銨、碳酸烷基 錄或氫氧㈣隸。特錢❹氫氧化四乙基料碳酸氣 四乙基銨。此等化合物及其所形成之副產物可輕易溶於水 中。因此,一方面,其等適宜用於實施在水溶液中製備前 驅物之反應,及另一方面,可藉由再結晶或轉移至有機溶 劑中而將所形成之副產物輕易地自前驅物分離出。 半導體層一般具有15 nm至3 μηι,較佳30 nm至2 μηι之厚 度。層厚度係視各情況中所使用之塗覆技術及其等參數而 疋。於旋塗之情況中,其係(例如)旋轉速度及持續時間。 於喷塗之情況中’厚度可隨喷塗時間而增加。 根據本發明’基板可為剛性基板,如玻璃、陶兗、金屬 或塑膠基板,或可撓基板,特定言之塑膠膜或金屬箔片。 根據本發明,較佳使用經鉬塗覆之基板,其對太陽能電池 之性能極有效。 本發明進一步關於一種製造電子結構,較佳層狀半導 體’更佳光伏打裝置(其較佳係薄膜光伏打裝置)之方法, 特徵在於 a) 較佳藉由浸塗、喷塗、旋塗、縫塗、滴鑄、刮刀塗覆、 喷墨印刷或彈性凸板/凹板印刷,對應於待獲得之電子 結構將本發明前驅物混合物以層狀方式,視需要一或多 次地施用至一基板, b) 锻燒及/或乾燥所施用之前驅物層,以形成一半導體層 或表面,及 156123.doc 201210029 C)視需要將其他層及/或接觸件提供至所施用之電子結 構。 ’口 可藉由(例如)喷塗於一熱基板上(噴霧熱解)而同時實施 步驟a)及b)。 此方法於電子結構中製造半導體組件及視需要組件之連 接。該電子結構可為太陽能裝置之一部分,其中該吸收層 包含所製造之半導體。 藉由諸如浸塗、噴塗、旋塗、縫塗、滴鑄、到刀塗覆、 喷墨印刷或彈性凸板/凹板印刷之方法將前驅物混合物施 用於基板上係類似熟習本項技術者熟知之方法般實施(參 見 M.A. Aegerter、M. Menning; Sol-Gel Technologies for
Glass Producers and Users, Kluwer Academic Publishers, Dordrecht,Netherlands,2004),其中根據本發明以旋塗或 噴塗為較佳。 於本發明之一較佳實施例中’藉由將溶於適宜有機溶劑 中之一或多種(較佳兩種)前驅物及硫族源之混合物沈積於 一基板上及熱分解該等前驅物以獲得半導體層來製造光伏 打裝置中之吸收層。例如,將銅前驅物及銦前驅物與硒共 沈積及隨後於惰性環境中加熱以獲得CIS層。 肟前驅物相當多樣且可藉由各種金屬(包括銅、銦、 鎵、錫、鋅等製備。因此,基於肪前驅物之本發明涵蓋形 成為材料CIS、CISS、CIGS、CZTS(銅鋅錫硒化物及/或硫 化物)及如碰化銅(I-VI)、硫化銅(I-VI)、砸化鋅(II-VI)、 硫化鋅(II-VI)、硒化銦(III-VI)、硫化銦(III-VI)、硒化鎵 156123.doc •12· 201210029 (III-VI)、硫化鎵(ΠΙ-VI)、硒化錫(IV_VI)、硫化錫(IV_VI) 等之其他硫族化合物。 當將兩或更多種金屬用於該方法時,前驅物混合物包含 相當於期望半導體之化學計量之相對量的肟金屬前驅物。 就純CIS層而言,將採用等莫耳量之銅及銦前驅物。亦可 調整銅與銦前驅物之比以製造稍貧銅或富銅之CIS層。於 文獻中已展示稍貧銅CIS組合物具有較佳光伏打性能。 硫私(硒及/或硫)源較佳係選自硒脲/硫脲或其等衍生 物、硫代乙醯胺或溶於如肼、乙二胺、乙醇胺等之胺丨如 一丁基膦、二辛基膦、三苯基膦等之膦或其他適宜載劑中 之Se/S粉末。 前驅物混合物包含相對於金屬量之一定量的硫族組分, 該量等於期望半導體之化學計量或更大。較佳使用過量的 硫族物,因一些硒或硫可能會因硫族物之揮發性而於退火 及分解前驅物混合物期間損失。硫族物之量較佳為相對於 理論金屬含量之1〇0%(化學計量,〇%過量)至4〇〇%(3〇〇%過 量)’更佳10至150%過量。 可將前驅物混合物用作油墨,該油墨可浸塗、喷塗、旋 塗、縫塗、滴鑄、到刀塗覆、喷墨印刷或彈性凸板/凹板 印刷於任何基板上。基板包括(例如)玻璃、金屬箔片或塑 膠。 可將前驅物混合物沈積於「熱」基板上,以於原位分解 該前驅物形成半導體層。此方法(稱為噴霧熱解)防止混合 物中之單一物質於分解前於液體載劑蒸發時結晶。所製造 I56123.doc 13 201210029 之材料或層可具有更均勻之元素空間分佈。 製造半導體材料或吸收層之另一方法係將前驅物溶液沈 積於維持在低於分解溫度之溫度τ(—般於室溫下)之基板 上。此步驟之後,接著較佳在惰性環境巾於前驅物之分解 溫度下退火該等膜以將前驅物膜轉化為半導體層,例如, CIS層。可存在蒸發液體載劑之—中間步驟。此方法提供 更多時間以使前驅物混合物以所需形式或厚度均勻地分佈 於基板上。 於該方法之第三實施例中,冑冑驅物混合物乾式喷霧至 熱惰性氣體中,而提供精細半導體粉末或顆粒。 金屬錯合物前驅物之熱轉化成功能半導體層係於 d〇°C,較佳H2(TC,及更佳y5(rc之溫度下實施。該溫 度較佳係介於150與450t;之間β分解後之殘餘物不含任何 顯著的碳污染物(<1%)。於第一分解步驟之後,可接著進 一步的退火步驟,以改良半導體(較佳半導體層(更佳CIS 或CIGS層))之電子性質及結晶度及/或顆粒尺寸。可藉由 提高退火溫度及退火時間來增加半導體膜之顆粒尺寸。若 前驅物完全分解’則不形成中間產物相(其有損於PV性 能)。就半導體膜之形成而言’無需高於250 °C之額外高溫 硒化或硫化步驟(即’於硫族物蒸氣中退火該等膜)。因 此’於本發明之一較佳實施例中,用於製造本發明光伏打 裝置之方法無任何在高於250°C溫度下之額外硒化及/或硫 化步驟。如此一來,可使製程溫度維持於200°C或更低。 另一方面,退火及石西化因除前驅物分解外之其他作用而 156123.doc •14- 201210029 仍可提供改良之裝置性能。可於高溫下使顆粒尺寸及晶界 最優化’同時視需要於此等溫度下於氣相中提供額外的硫 族物(一般為Se)以維持其含量穩定。因此,於本發明之另 一較佳實施例中’本發明方法在前驅物分解之後包含作為 另一步驟之硒化及/或硫化步驟及/或退火步驟。於經退火 膜中之硫族物之量可藉由前驅物溶液中之初始硫族物含量 及藉由退火/分解溫度及時間來控制。 於一更佳貫施例中,金屬錯合物前驅物或前驅物混合物 之轉化成功能半導體層係藉由輻射(較佳電磁輻射,包括 微波、IR及UV)實施,較佳係<4〇〇 nm波長下之1^光。該 波長較佳係介於150與380 nm之間^ uv輻射之優點係藉此 製造之層具有較小表面粗缝度。 電子組件具有接觸件且係以習知方式完成。就光伏打裝 置而言,提供由(例如)Zn〇或氧化銦錫製成之透明頂電極 及金屬柵格。 本發明進-步係關於本發明金屬錯合物或前驅物混合物 於製造光伏打裝置中之—或多個功能層(較佳吸收層)之用 途。 【實施方式】 本發明將藉由以上論述及眘也丨_ . L . <久貫例’同時結合附圖(圖1至7) 作更完整詮釋及說明。 於上下文中使用以下縮寫: PCE 電力轉換效率, FF 填充因子, 156123.doc -15 - 201210029 V 〇 C 開路電壓, he 短路電流密度, DMF N,N-二曱基甲醯胺,溶劑。 以下實例意欲說明本發明。然而,其等不應視為以任何 方式造成限制。 製備金屬前驅物: 1) 製備銅前驅物雙【2-(羥基亞胺基)_丙酸根】銅 〇玄化 〇 物 i丁、根據 M.V. Kirillova 等人 Acta Cryst.(2007) E63,ml670-ml671藉由用N_羥基_2,2,_亞胺基二丙酸處理 硝酸銅(II)之曱醇溶液而製備。 2) 製備姻前驅物三[2_(甲氧基亞胺基)丙酸根]銦 伴隨搜拌將权酸氫鈉(1.68 g,20 mmol)以小份逐次方式 添加至丙酮酸鈉(2_2〇 g,20 mmol)及甲氧基胺鹽酸鹽(1.67 g,20 mmol)於50 ml水中之溶液》當可見氣體釋放完成 時,將混合物再攪拌30分鐘。隨後於旋轉蒸發器中蒸發混 合物至完全乾燥。將無水氯化銦(1 95 g,6.6 mmol)於125 ml甲醇中之溶液添加至以此方式獲得之白色粉末,及將混 合物攪拌2小時。過濾溶液並於旋轉蒸發器中蒸發至乾。 將殘餘物溶於1 〇〇 ml二氣甲烷中,及再過濾以此方式獲得 之懸浮液。隨後利用大量正己烷使產物自濾液沉澱,濾除 並於乾燥器中乾燥。可藉由IR及NMR光譜術定性以此方式 獲得之化合物。 3) 製備鎵前驅物三【2_(甲氧基亞胺基)丙酸根]鎵 伴隨授拌將碳酸氫鈉(1.68 g,20 mmol)以少量逐次方式 156123.doc -16 - 201210029 添加至丙酮酸鈉(2.20 g,20 mmol)及曱氧基胺鹽酸鹽(167 g,20 mm〇1)s5〇⑹水中之溶液。當可見氣體釋玫完成 時’將混合物再攪拌3〇分鐘。隨後於旋轉乾燥器中蒸發混 合物至完全乾燥。將硝酸鎵六水合物(2.40 g,6.6 mmol)於 125 ml甲醇中之溶液添加至以此方式獲得之白色粉末,及 將混合物攪拌2小時。過濾溶液及於旋轉蒸發器中蒸發至 乾。將殘餘物溶於100 ml二氣曱烷中,及再過濾以此方式 獲得之懸浮液。隨後利用大量正己烷使產物自濾液沉殿, 濾除及於乾燥器中乾燥。可藉由IR&NMIl光譜述定性以此 方式獲得之化合物。 4) 製備锡前驅物氫氧根[2_(甲氧基亞胺基)丙酸根】錫 伴隨攪拌將奴酸虱納(7.56 g,90 mmol)依少量逐份方式 添加至丙酮酸鈉(9.90 g,90 mmol)及曱氧基胺鹽酸鹽(753 g,90 mmol)於1〇〇 mi水中之溶液。當可見氣體釋放完成 時,將混合物再攪拌30分鐘。隨後於旋轉蒸發器中蒸發混 合物至完全乾燥。將無水氯化錫(11)五水合物(7 88 g,22 5 mmol)於250 ml曱醇中之溶液添加至以此方式獲得之白色 粉末,及將混合物攪拌2小時。過濾溶液並於旋轉蒸發器 中蒸發至乾。將殘餘物溶於ml丙酮或二甲氧基乙燒 中,及再過濾以此方式獲得之懸浮液。隨後利用大量乙犍 使產物自濾液沉澱,濾除及於乾燥器中乾燥。 5) 雙[2-(經基亞胺基)丙酸根】辞 (J.J. Schneider 等人,Advanced Materials(2〇〇8)2〇, 3383-3387) 156123.doc 17 201210029 將碳酸氫四乙基敍(22.94 g,120 mmol)依少量逐份方式 添加至丙酮酸(5.28 g,60 mmol)及曱氧基胺鹽酸鹽(5.02 g,60 mmol)於20 ml水中之溶液》於可見氣體釋放終止之 後’將溶液再攪拌2小時。隨後添加Ζη(Ν03)2·6Η20(8.92 g ’ 30 mmol),將混合物再攪拌4小時及隨後冷卻至5°C。 濾去所得之白色沉澱物及自熱水再結晶。 製備含有前驅物之溶液 於裝置實例1及2中’使用0.1 mmol/ml雙或三[2-(氧基亞 胺基)-丙酸根]金屬於DMF中之溶液(溶液A)。除非另外說 明’否則將0.4 硒脲溶液(溶液B)或0.8 mmol/ml硒 脲溶液(溶液D)用作硫族源。 次塗·牽引速度〜1 mm/秒。所採用之基板係76X26 mm 玻璃板。 旋塗:關於旋塗,將15〇至350 μΐ溶液施用至基板。所使 用之基板係25x25 mm玻璃,其視需要經鉬塗覆。所選擇 之持續時間及速度參數係於15〇〇 rpm之初期速度下1〇 s及 於2500 rpm之最終速度下2〇 s。 喷塗:關於噴塗,使用具有〇35 mm針腳/喷嘴組合之
Iwata Eclipse HP-CS氣刷。於6〇 psi氮氣壓力下實施前驅物 喷塗。亦可使用超聲波喷塗及其他f用喷塗設備於喷塗此 等前驅物。爲獲得無如針孔之缺陷之m,可纟諸如喷嘴與 基板門之距離氣壓及/或前驅物流動速率之喷塗參數最 優化。 裝置實例1··光伏打裝置之構造,其十⑶吸收層係藉由旋 \56\23.doc 201210029 塗前驅物,接著退火膜而製得: 此處之溶液A含有含兩水合水分子之雙[2_(羥基亞胺基) 丙酸根]銅及三[2-(甲氧基亞胺基)丙酸根]銦。為旋塗膜, 新鮮混合150 μί溶液A與B並立即於1000 rpm下旋塗至 1"χΓ玻璃或經鉬塗覆之玻璃基板上。隨後使基板於3〇crc 下退火30秒。依此方式處理8至10層及最後使膜於35〇它下 退火2分鐘。膜厚度經表面輪廟儀測量為< 1 〇〇 nm。圖1顯 示玻璃上之CIS膜之XRD,其揭示一乾淨的黃銅.(:^相。 膜表面之SEM影像顯示5至20 nm之CIS顆粒尺寸。 爲完成該光伏打裝置’藉由其他文獻所述之溶液方法沈 積一 CdS層(~60nm)(M.A· Contreras等人,Thin Solid Films 2002 ’ 403-404,204-211) » 藉由 RF 濺鍍依序沈積 ZnO(60 nm)及 ITO(300 nm)薄膜。 圖2顯示光伏打裝置於黑暗及ami .5光條件下之IV特性 圖。該裝置特性如下: PCE=0.508%, FF=0.329, V〇c=218 mV,
Jsc=7.082 mA/cm2。 裝置實例2:光伏打裝置之構造,其中CIS吸收層係藉由前 驅物之喷霧熱解製成: 此處之溶液A含有含兩個水合水分子之雙[2_(羥基亞胺 基)丙酸根]銅及三[2-(曱氧基亞胺基)丙酸根]銦。混合溶液 A與B及於氮氣環境中立即噴塗於維持在3〇〇。〇下之玻璃或\ 156123.doc -19- 201210029 經Mo塗覆之玻璃基板上。喷塗進行5分鐘,接著在350。匸 下持續10分鐘之退火步驟。 爲完成該光伏打裝置,藉由溶液方法(參見上文)沈積一 CdS層(〜60 nm)。藉由RF濺鍍依序沈積Zn〇(6〇 nm)及 ITO(300 nm)薄膜。然後使整個裝置於2〇〇°c下於空氣中退 火10分鐘。於玻璃上之〇·5 μιη厚CIS膜之橫截面之SEM影 像顯示5至2 0 nm之顆粒尺寸。 圖3顯示光伏打裝置在黑暗及AM1.5光條件下之iv特性 反應。所測得之裝置特性如下: PCE=0.247°/〇 > FF = 0.313, V〇c=382 mV,
Jsc=2.063 mA/cm2。 裝置實例3:前驅物之喷霧熱解及膜之硒化: 於此實例中’吾人示範使用在過量Se蒸氣存在下之高溫 砸化於改良膜之顆粒尺寸及結晶度及評估PV反應。第一溶 液C含有4 ml DMF及0.098 mmol雙[2-(羥基亞胺基)丙酸根] 銅·2Η2〇、0.1 mm〇l三[2-(曱氧基亞胺基)丙酸根]銦。此處 之溶液D含有0.8 mmol/ml砸脲之DMF溶液。混合4 ml溶液 C與0.5 ml溶液D及於氮氣環境中立即喷塗於維持在37〇°c 下之經Mo塗覆之基板上《於此情況中喷塗係於2〇 psi下進 行約1 5分鐘以製造一厚膜(〜2 · 5 μιη)。將基板移至具有一些 石西彈之密封石墨盒。石墨係保存於含惰性氬氣環境之石英 管中。將該石英管插入維持在55(TC下之管爐中及進行硒 156123.doc •20- 201210029 化60分鐘。於石西化製程期間,硒粒於密封石墨盒内之基板 上形成砸蒸氣。 圖4顯示(a)喷塗時之CIS膜之Xrd光譜及硒化後之CIS 膜。所喷塗之CIS膜展現寬廣黃銅礦峰,其顯示16 nm之小 顆粒尺寸(藉由Debye-Scherrer公式自(112)峰之譜線展寬計 算得)。亦觀察到來自基板之鉬峰。就經硒化之樣品而 言,(112)峰遠更窄,指示顆粒生長顯著。亦可見低強度 (101)及(211)♦,證實黃銅礦CIS結構及改良之硒化結晶 度。於經硒化之樣品中,由於硒蒸氣與鉬基板反應,故亦 觀察到寬廣的叾西化銷峰。 圖5顯示硒化膜之SEM影像,其顯示至大i μιη尺寸之大 的良好琢面化顆粒,證實顆粒生長。 於砸化後’利用10重量%氰化鉀溶液處理膜2分鐘,以 移除膜表面上之任何殘餘硒化銅相。爲完成該光伏打裝 置,藉由溶液方法(參見上文)沈積一 CdS層(〜60 nm)。藉由 RF濺鍍依序沈積ZnO(60 nm)及ITO(300 nm)薄膜。利用市 售銀漆將銀柵格手工塗漆於裝置上。 銀漆覆蓋活性裝置面積之約15%。總活性裝置面積係 16.5 mm2。將完成裝置於空氣中m165〇c下退火2分鐘以改 良裝置性能。 圖6顯示光伏打裝置在黑暗及AM1.5光條件下之以特性 反應。裝置特性如下: PCE=3.76% FF=0.36 156123.doc -21 - 201210029 V〇c=0.337 V Jsc=30.7 mA/cm^ 以上裝置特性係基於未針對受手工塗漆銀柵格面積 (〜15%)阻擋之光校正之值。於銀漆面積校正後,裝置效率 為4.42 /〇。所觀察到之電流及效率較未砸化之裝置實例1及 2南甚多。4·42%之改良效率值仙#改良結晶度及增加顆 粒尺寸時重組損失降低所導致之遠較高電流值之故。預期 當改良喷塗膜品質、使硒化條件最優化及使其他裝置層最 優化時’可進一步顯著地改良效率。 裝置實例4:喷霧熱解用於(:1〇8膜之前驅物及快速熱退 火: 於此實例中,吾人示範在不存在任何過量硫族物蒸氣下 利用快速熱退火(RTA)方法藉由高溫退火之顆粒生長。於 此貫例中’將肪則驅物與市售前驅物混合,以展示肪前驅 物可與數種其他類型前驅物(如乙醢丙酮酸鹽、乙酸鹽等) 混合之多功能性。溶液Ε含有4 ml DMF及0.098 mmol雙[2-(經基亞胺基)丙酸根]銅·2Η2〇、0.07 mmol乙醯丙酮酸銦 (購自Sigma Aldrich)及0.03 mmol乙醯丙酮酸鎵(購自Sigma Aldrich)。將4 ml 溶液 E 與 0.5 ml 溶液 D(0.8 mmol/ml 硒脲溶 液)混合’及於氮氣環境中立即喷塗於維持在3〇〇。(:下之經 Mo塗覆之基板上《於此情況中,喷塗係於2〇 psi下進行約 15分鐘以製造一厚膜(〜2.5 μηι)。利用鹵素燈於惰性氬氣氛 圍中使該等膜在550°C下歷經RTA歷時10 min。 圖4顯示喷塗CIGS膜之XRD(c)及RTA後之CIGS膜之 156123.doc •22- 201210029 XRD ^噴塗膜展現關於鉬基板之峰及展現6 nm小顆粒尺寸 (藉由Debye-Scherrer公式自(112)峰之譜線展寬計算得)之 寬廣黃銅礦峰》KRTA之後,樣品(112)峰遠較窄,指示 >55 nm之顆粒生長。亦可見低強度(101)及^^”峰,證實 黃銅礦CIGS結構及改良之結晶度。 於RTA之後,利用1〇重量% KCN溶液處理膜2分鐘以移 除表面上之任何硒化銅相。爲完成該光伏打裝置,以溶液 方法(參見上文)沈積一 CdS層(〜60 nm)。藉由RF濺艘依序 沈積ZnO(60 nm)及ITO(300 nm)薄膜。利用市售銀漆將銀 栅格手工塗漆於最終裝置上。銀漆覆蓋活性裝置面積之約 15 %。總活性裝置面積係16 _ 5 mm2。將完成裝置於165。〇下 於空氣中退火2分鐘以進一步改良裝置性能。 圖7顯示光伏打裝置在黑暗及ami.5光條件下之IV特性 反應。裝置特性如下: PCE=1.5 3% FF=0.48 V〇c=0.318 V Jsc=l〇-12 mA/cm2 乂上裝置特|·生係基於未針對受手工塗漆銀栅格面積 (〜15%)阻擋之光進行校正之值。於銀漆面積校正之後,裝 置效率係中之18%效率較m高,此係 因改良之電流值、結晶度及顆粒尺寸之故。然而,裝置實 例4之效率值(1.8%)較裝置實例3(4_42%)低,此係因相對較 小之顆粒尺寸導致裝置實例3之電流值較低。預期藉由改 156123.doc -23· 201210029 良喷塗膜品質、使快速熱退火時間/溫度最優化及使其他 裝置層最優化,可進一步顯著改良效率。 【圖式簡單說明】 圖1 :該圖顯示包含根據裝置實例1沈積之CIS之本發明 膜之X-射線繞射圖案(強度對繞射角2Θ作圖)。該XRD圖案 顯示’除歸因於非晶形玻璃基板之背景外,存在CulnSe2 作為唯一的晶體相峰。晶體雜質低於約2重量%之偵測限 度》 平均微晶體尺寸可藉由Debye-Scherrer公式自谱線展寬 計算得為約12 nm ’此係典型的奈米晶體材料。 圖2·該圖顯示光伏打裝置在黑暗及am 1.5光條件(IEC 9〇4-3(1989),part III)下之IV特性反應。該裝置描述於裝 置實例1中。 圖3 ·該圖顯示光伏打裝置在厚暗及am 1.5光條件下iv 特性反應。該裝置描述於裝置實例2中。 圖4 :該圖顯示包含根據裝置實例3沈積之CIS(a、b)及 根據裝置實例4之CIGS(c、d)之本發明膜之X_射線繞射圖 案(強度對繞射角2Θ作圖): a) 根據裝置實例3於37(TC下噴塗之CIS膜,其顯示黃銅 礦CuInSe2峰及來自鉬基板之峰。 b) 根據裝置實例3於硒化後之CIS膜,其顯示高度結晶黃 銅礦CuInSh、硒化鉬及鉬峰。(112)峰變窄顯示在55〇<>(:下 石西化時之顆粒生長。 c) 根據裝置實例4於30〇t下喷塗之CIGS膜,其顯示黃銅 I56123.doc •24- 201210029 礦Cu(InGa)Se2相及來自鉬基板之峰。 d)根據裝置實例4於RTA後之CIGS膜,其顯示高度結晶 黃銅礦Cu(InGa)Se2及鉬峰。(112)峰變窄顯示在550。(:下 RTA後之顆粒生長。 a至d)當與CIS峰(a及b)對比時,CIGS峰(c及d)因併入鎵 而稍移向較高2Θ。 圖5 :該圖顯示光伏打裝置在黑暗及ami .5光條件下之 IV特性反應。該裝置描述於裝置實例3中。此裝置之pcE 係3.76°/。(於銀漆柵格面積校正前)及4 42%(於銀漆柵格面積 校正後)。 圖ό:該圖顯示裝置實例3中製造之硒化膜之SEM影像, 其顯不至大1 μιη尺寸之良好琢面化CuInSe2大顆粒。 圖7 _該圖顯不光伏打裝置在黑暗及AM 1.5光條件下對 CIGS膜之IV特性反應。該裝置描述於裝置實例4中。此裝 置之PCE係1.53%(於銀漆柵格面積校正前)及18%(於銀漆 拇格面積校正後)。 156123.doc -25·

Claims (1)

  1. 201210029 七、申請專利範圍: 1.種製造半導體之方法,其特徵在於 …包含一或多種金屬錯合物及硫族源之前驅物, 至少一金屬錯合物包含來自㈣之__或多個配位體,及 b.藉由加熱及/或輻射分解該等經組合之前驅物以形成該 半導體。 月长項1之方法,其特徵在於該半導體係I-III-VI2型、 ϊ-νι型、n_VI型、m_Vl型、Ιν_ν^4ΐ ιι ιν_νΐ2型。 如明求項1或2之方法’其特徵在於該半導體係在基板上 I成為膜或層。 如吻求項1或2之方法,其特徵在於該等前驅物之組合係 於溶液中進行。 如β求項1或2之方法,其特徵在於該等經組合之前驅物 係於惰性環境中分解。 6. 如叫求項1或2之方法,其特徵在於該硫族物係硒(Se)或 硫(S) 〇 7. 如請求項1或2之方法,其特徵在於該硫族源包含有機硒 或硫化合物或元素栖或硫。 8. 如請求項1或2之方法,其特徵在於該硫族源係選 自石西腺 或知生物、硫脲或衍生物、硫代乙醯胺或溶於胺或膦中 之石夕/硫中之一或多者。 9. 如請求項1或2之方法,其特徵在於用於分解之溫度係 T>80〇C。 1 〇.如5月求項1或2之方法,其特徵在於該等前驅物包含作為 156123.doc 201210029 金屬的鋼及/或銦及/或鎵。 π. 12, 13. 14. 15. 16. 17. 如清求項1或2之方法,其特徵在於該等前驅物包含作為 金屬錯合物之銅及/或銦及/或鎵之肟錯合物。 如请求項1或2之方法,其特徵在於該方法在分解前驅物 之後包括作為進一步步驟之硒化及/或硫化步驟及/或退 火步驟β 如明求項1或2之方法’其特徵在於至少一金屬前驅物包 含銅β 如明求項1或2之方法’其特徵在於至少一金屬前驅物包 含銦或鎵。 :種製造包含半導體之薄膜光伏打裝置之方法,其中該 半:體係藉由如請求項m中任一項之方法製造。 如睛求項15之方法’其特徵在於該方法於分解前驅物之 後包括作為進一步步驟之砸化及/或硫化步驟及/或退火 步驟。 種則驅物混合物,发h人s丨、. 八包含至少一金屬肟鹽及硫族源且 該前驅物混合物可分解形成半導體。 156123.doc
TW100122709A 2010-06-29 2011-06-28 Preparation of semiconductor films TW201210029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35958510P 2010-06-29 2010-06-29

Publications (1)

Publication Number Publication Date
TW201210029A true TW201210029A (en) 2012-03-01

Family

ID=44310903

Family Applications (1)

Application Number Title Priority Date Filing Date
TW100122709A TW201210029A (en) 2010-06-29 2011-06-28 Preparation of semiconductor films

Country Status (7)

Country Link
US (1) US9117964B2 (zh)
EP (1) EP2589066B1 (zh)
JP (1) JP2013530540A (zh)
KR (1) KR20130034662A (zh)
CN (1) CN102971832A (zh)
TW (1) TW201210029A (zh)
WO (1) WO2012000594A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI462319B (zh) * 2012-04-24 2014-11-21 Solar Applied Mat Tech Corp 堆疊式銅鋅錫硒硫薄膜太陽能電池及其製作方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012075259A1 (en) * 2010-12-03 2012-06-07 E. I. Du Pont De Nemours And Company Molecular precursors and processes for preparing copper indium gallium sulfide/selenide coatings and films
US8771555B2 (en) 2011-05-06 2014-07-08 Neo Solar Power Corp. Ink composition
EP2807670A1 (de) * 2012-01-27 2014-12-03 Merck Patent GmbH Verfahren zur herstellung elektrisch halbleitender oder leitender schichten mit verbesserter leitfähigkeit
WO2013159864A1 (en) 2012-04-27 2013-10-31 Merck Patent Gmbh Preparation of semiconductor films
FR2993792B1 (fr) 2012-07-26 2017-09-15 Imra Europe Sas Film de chalcogenure(s) metallique(s) cristallise(s) a gros grains, solution colloidale de particules amorphes et procedes de preparation.
KR101288106B1 (ko) * 2012-12-20 2013-07-26 (주)피이솔브 금속 전구체 및 이를 이용한 금속 전구체 잉크
KR101582200B1 (ko) * 2013-10-31 2016-01-20 재단법인대구경북과학기술원 Czts계 태양전지용 박막의 제조방법 및 이를 통해 제조된 박막을 포함하는 czts계 태양전지
KR20160115972A (ko) * 2014-01-31 2016-10-06 메르크 파텐트 게엠베하 반도체 필름의 제조
CN105934535A (zh) * 2014-01-31 2016-09-07 默克专利股份有限公司 制备uv光检测器的方法
US9899325B2 (en) * 2014-08-07 2018-02-20 Infineon Technologies Ag Device and method for manufacturing a device with a barrier layer
US10326090B2 (en) 2014-09-30 2019-06-18 Merck Patent Gmbh Semiconductor composition comprising an inorganic semiconducting material and an organic binder
CN109148625A (zh) * 2018-05-17 2019-01-04 中国科学院物理研究所 铜锌锡硫硒薄膜太阳能电池及其制备方法

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8715082D0 (en) 1987-06-26 1987-08-05 Prutec Ltd Solar cells
JPH01298010A (ja) 1988-05-26 1989-12-01 Mitsubishi Metal Corp 金属セレン化物の製造方法
JPH0368775A (ja) 1989-08-04 1991-03-25 Dowa Mining Co Ltd Cu―In―Se系化合物薄膜の作製方法
US5731031A (en) 1995-12-20 1998-03-24 Midwest Research Institute Production of films and powders for semiconductor device applications
JPH114009A (ja) 1997-06-12 1999-01-06 Yamaha Corp 太陽電池の製造方法
JP2001274176A (ja) 2000-03-24 2001-10-05 Central Glass Co Ltd 化合物半導体膜の製造方法
US20070156259A1 (en) 2005-12-30 2007-07-05 Lubomir Baramov System generating output ranges for model predictive control having input-driven switched dynamics
US20080038558A1 (en) 2006-04-05 2008-02-14 Evident Technologies, Inc. I-iii-vi semiconductor nanocrystals, i-iii-vi water stable semiconductor nanocrystals, and methods of making same
US7494841B2 (en) 2006-05-12 2009-02-24 International Business Machines Corporation Solution-based deposition process for metal chalcogenides
CA2652713A1 (en) 2006-05-19 2008-02-21 Purdue Research Foundation Rapid synthesis of ternary, binary and multinary chalcogenide nanoparticles
AT503837B1 (de) * 2006-06-22 2009-01-15 Isovolta Verfahren zum herstellen von photoaktiven schichten sowie bauelemente umfassend diese schicht(en)
US8057850B2 (en) 2006-11-09 2011-11-15 Alliance For Sustainable Energy, Llc Formation of copper-indium-selenide and/or copper-indium-gallium-selenide films from indium selenide and copper selenide precursors
EP2944383A3 (en) 2006-11-09 2016-02-10 Alliance for Sustainable Energy, LLC Precursors for formation of copper selenide, indium selenide, copper indium diselenide, and/or copper indium gallium diselenide films
US8409473B2 (en) 2007-01-30 2013-04-02 Evident Technologies, Inc. Group II alloyed I-III-VI semiconductor nanocrystal compositions and methods of making same
DE102007043920A1 (de) * 2007-07-17 2009-01-22 Merck Patent Gmbh Funktionelles Material für gedruckte elektronische Bauteile
US8613973B2 (en) 2007-12-06 2013-12-24 International Business Machines Corporation Photovoltaic device with solution-processed chalcogenide absorber layer
DE102009004491A1 (de) * 2009-01-09 2010-07-15 Merck Patent Gmbh Funktionelles Material für gedruckte elektronische Bauteile
JP5634511B2 (ja) * 2009-06-16 2014-12-03 ビーエーエスエフ ソシエタス・ヨーロピアBasf Se 半導体金属酸化物粒子層において粒子間接触部分を改善するため及び間隙を埋めるための熱的に化学変化の起こり易い前駆体化合物

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI462319B (zh) * 2012-04-24 2014-11-21 Solar Applied Mat Tech Corp 堆疊式銅鋅錫硒硫薄膜太陽能電池及其製作方法

Also Published As

Publication number Publication date
WO2012000594A1 (en) 2012-01-05
KR20130034662A (ko) 2013-04-05
CN102971832A (zh) 2013-03-13
EP2589066B1 (en) 2015-10-21
US20130102108A1 (en) 2013-04-25
EP2589066A1 (en) 2013-05-08
JP2013530540A (ja) 2013-07-25
US9117964B2 (en) 2015-08-25

Similar Documents

Publication Publication Date Title
TW201210029A (en) Preparation of semiconductor films
US20130316519A1 (en) Techniques for Forming a Chalcogenide Thin Film Using Additive to a Liquid-Based Chalcogenide Precursor
JP6688832B2 (ja) アンチモンがドープされたナノ粒子
JP2012527523A (ja) 銅スズ硫化物および銅亜鉛スズ硫化物インク組成物
US9856382B2 (en) Homogeneous coating solution and production method thereof, light-absorbing layer of solar cell and production method thereof, and solar cell and production method thereof
TWI595680B (zh) 用於製備二硒化/二硫化銅銦鎵(cigs)奈米粒子之方法、由該方法製備之cigs奈米粒子及基於其之光伏打裝置
US20160359060A1 (en) Preparation of semiconductor films
WO2014191083A1 (en) Nanoparticles, ink and process for making and using
TW201401344A (zh) 半導體膜之製備
JP6281835B2 (ja) 太陽電池用化合物半導体ナノ粒子の作製方法
WO2016068155A1 (ja) 均一系塗布液及びその製造方法、太陽電池用光吸収層及びその製造方法、並びに太陽電池及びその製造方法
Zhang et al. A Novel Ethanol-Based Non-Particulate Ink for Spin-Coating Cu2ZnSnS4 Thin Film
JP2017212398A (ja) 均一系塗布液の製造方法、太陽電池用光吸収層の形成方法、および太陽電池の製造方法
Romanyuk et al. Article type: Feature Article All solution-processed chalcogenide solar cells–from single functional layers towards a 13.8% efficient CIGS device