TW201138133A - Thin film photovoltaic cell - Google Patents
Thin film photovoltaic cell Download PDFInfo
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- TW201138133A TW201138133A TW100109839A TW100109839A TW201138133A TW 201138133 A TW201138133 A TW 201138133A TW 100109839 A TW100109839 A TW 100109839A TW 100109839 A TW100109839 A TW 100109839A TW 201138133 A TW201138133 A TW 201138133A
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- thin film
- photovoltaic cell
- film photovoltaic
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- 239000010409 thin film Substances 0.000 title claims abstract description 48
- 239000004065 semiconductor Substances 0.000 claims abstract description 85
- 239000006096 absorbing agent Substances 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 239000011368 organic material Substances 0.000 claims abstract description 33
- 239000010408 film Substances 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 24
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 239000002243 precursor Substances 0.000 claims description 9
- 229910004613 CdTe Inorganic materials 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052707 ruthenium Inorganic materials 0.000 claims description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 claims 2
- 230000002950 deficient Effects 0.000 claims 1
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- 229910000073 phosphorus hydride Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 111
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- 239000011669 selenium Substances 0.000 description 18
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- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 11
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- 150000004354 sesquiterpene derivatives Chemical class 0.000 description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- 238000000224 chemical solution deposition Methods 0.000 description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 4
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- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 4
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- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 3
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- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 239000002042 Silver nanowire Substances 0.000 description 2
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
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- 229910052732 germanium Inorganic materials 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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- AKUCEXGLFUSJCD-UHFFFAOYSA-N indium(3+);selenium(2-) Chemical compound [Se-2].[Se-2].[Se-2].[In+3].[In+3] AKUCEXGLFUSJCD-UHFFFAOYSA-N 0.000 description 1
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- PRZWBGYJMNFKBT-UHFFFAOYSA-N yttrium Chemical compound [Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y][Y] PRZWBGYJMNFKBT-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/0248—Semiconductor 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
- H01L31/0256—Semiconductor 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
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0322—Inorganic 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/04—Semiconductor 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 adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor 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
- H01L31/0248—Semiconductor 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
- H01L31/0256—Semiconductor 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
- H01L31/0264—Inorganic materials
- H01L31/0328—Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups H01L31/0272 - H01L31/032
- H01L31/0336—Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups H01L31/0272 - H01L31/032 in different semiconductor regions, e.g. Cu2X/CdX hetero- junctions, X being an element of Group VI of the Periodic Table
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/541—CuInSe2 material PV cells
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Condensed Matter Physics & Semiconductors (AREA)
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- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sustainable Development (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Photovoltaic Devices (AREA)
Description
201138133 六、發明說明: 【發明所屬之技術領域】 本發明係關於薄膜光伏電池之領域。更且體古之,本 發明係關於薄膜光伏電池堆機(stake)以及關於其°製造方 法。 【先前技術】 近年來,對於薄膜光伏電池之興趣曰益增加。這一增 加之興趣可歸功於實驗室規模所作成之電池之轉化效率的 改善’以及製造成本可較之於更老且更昂責之晶形及多晶 石夕技術顯著降低的預期。術語“薄膜,,係用以將這種太陽 能電池與更常用之使用相對厚之石夕晶圓的石夕系電池區分開 來。儘管單晶矽電池仍然保持超過2〇%之轉化效率記錄, 業經製造出實施接近這一水準之薄膜電池。因此,該薄膜 電池之效能不再是限制其商業用途之主要課題。薄膜光伏 電池之大規模商業化仍然留存之—個顯著障礙為成本。經 濟薄膜光伏電池吸收劑材料之主要候選者為多晶化合物半 導體材料(亦即 ’ CdTe 及 Cu(In, Ga)(S, Se)2)。 常規之CdTe及Cu(In, Ga)(S,Se)2系薄膜光伏電池係 具有經堆棧之多層結構。此等薄骐光伏電池係具有基板(如 玻璃)及形成於其上之鉬後部觸點(back cxmtaeth CdTe 或Cu(In,Ga)(S,Se)2之P型半導體吸收劑層係形成於該鉬 後部觸點之上。η塑半導體緩衝層(如CdS)係形成於該p 型半導體吸收劑層上。第二η型半導體(如,未摻雜之Zn〇) 係形成於該緩衝層上’以及則部觸點(亦即,透明導電异(如 95168 3 201138133 Ζη0:Α1或in2〇3:Sn))係形成於該第二η型半導體上。 常規之包含CdTe及Cu(In,Ga)(S,Se)2吸收劑層的薄 膜光伏電池典型係自玻璃、金屬或聚合物基板開始生產 將钥沈積於該基板上以形成底部導電層。藉由濺射將兮。 收劑層沈積於該钥之上’之後進行砸化製程。下一步為 由化學浴或濺射沈積製程沈積CdS緩衝層,以於該吸收藉 層與該緩衝層之間形成pn接面。隨後,將本質Zn〇層機^ 沈積於該CdS緩衝層之上。於最終步驟中,將摻雜有Ai 之ZnO層沈積於該本質Zn0層之上。該摻雜有M之%〇 層形成光學透明之導電層。隨後可將電極蒸發於該摻= A1之Zn〇層之頂上,以作成電性接觸。當太陽光照射該電 池上時,於該底部與頂部電極之間生成電壓,允許自^ 池中提取電能。 ^電
CdTe或Cu(In,Ga)(S,Se)2系薄膜光伏電池之實例及 製造方法係於尼爾森(Niesen)等人之美國專利第 2009/0223556號中揭示之。Niesen等人揭露作成薄臈光伏 裝置之製程,係包含下列步驟:a)提供第一摻雜類型之黃 銅礦(chalkopyrite)半導體之第一層;b)於步驟幻之後汽, 藉由化學氣相沈積來沈積本質氧化鋅之第二層;以及幻於 $驟b)之後,藉由除了化學氣相沈積之外的方法沈積與第 一摻雜類型相反之第二摻雜類型之氧化鋅半導體之第三 層。 雖然’仍需要以溶液可沈積材料替代常規薄膜光伏裝 置中部份或全部之層,從而允許藉由連續卷至卷製造技術 95168 4 201138133 (roll to roll fabrication technique)進行薄膜光伏電 池之經濟製造。 【發明内容】 本發明係提供薄膜光伏電池,係包含:基板;提供於 該基板上之後部觸點;提供於該後部觸點上之P型半導體 吸收劑層;提供於該p型半導體吸收劑層上之η型半導體 層;提供於該η型半導體層上之介電有機材料層;提供於 該介電有機材料層上之透明導電膜;以及,視需要之提供 於該透明導電膜上之抗反射層。 本發明係提供製造薄膜光伏電池之方法,係包含:提 供基板;提供後部觸點;提供ρ型半導體吸收劑層,其中, 該後部觸點係與該Ρ型半導體吸收劑層電性聯通;於該ρ 型半導體吸收劑層上提供η型半導體層;提供介電有機材 料層前體;將該介電有機材料層前體施加至該0型半導體 層之表面上’且於該η型半導體層之表面上形成介電有機 材料層;以及於該介電有機材料層上形成透明導電膜;以 及視需要地,提供與該透明導電膜電性接觸之前部電極。 【實施方式】 本發月之薄獏光伏堆棧以介電層取代插置於透明導 電膜(亦即’透明前部觸點)與η型半導體層(亦即,緩衝 =的常規半導體本質氧化鋅層。本發明之賴光伏堆棧 沈積材料取代常規化學氣相沈積之本質氧化鋅 如本文及後附之申 請專利範圍中使用者,術語 之上 95168 5 201138133 (over)及上(on),,兩者皆囊括性地包括“直接位於其 上(亦即,無插置於其間之中間材料、元件或空間)及“間 接位於其上”(亦即,具有插置於其間之中間材料、元件或 空間)。舉例而言,提供一層位於基板“上,,之層可包括於 該基板上直接形成該層,且該層與該基板之間沒有中間材 料;以及於該基板上間接提供該層,且於該層與基板之間 具有一種或多種插入材料。 於本發明之薄膜光伏電池中使用之基板材料係包括 彼等通常用於光伏電池巾的基板材料。適當之基板材料令 i括舉例而。,玻續、金屬及聚合物材料。對於玻璃邊 板’所欲者可係於該麵基板上提供透明導電塗層,如章 SI:0。對於大規模製造(如使用卷至卷技術)來說, 薄金佳者。適當之柔性基板係包括,舉例而言, 銳、欽、鉻、鐵,録及鋼作成: 作成之膜):材料(如’由聚醚醚酮、聚醯亞胺及聚® 於本發明之薄膜光伏電池中使用 的電性連接。該後部觸二 該基板表面之-部份面、。或者,該後部觸點視需要地覆】 交界,而是料” °現需要地,該後部觸點不與該基才 劑層點視需要地連接至^型半導體吸4 部觸點可由㈣、銀、氧化_ 少一者作成。/ 纟目、銀及銘之1 見需要地,減部觸‘⑽由!目作成t 95168 6 201138133 該後部觸點係由 地’該後部觸點係由鋁作成。視需要地, 銀作成。 於本發明之薄膜光伏電池中使用之P型半導 Y暇及收劑 材料有時於該技藝中稱為“吸收劑層材料,,。該p型半、 體吸收劑層可包含常規用於薄膜光伏電池中的任何P型= 導體吸收劑材料。該P型半導體吸收劑材料較佳係選自 有高吸收係數之直接帶隙材料。較佳之P型半導體。及收具 材料的實例係包括,舉例而言,碲化鎘(cdTe)、硫綱鎮2 礦(Cu2(Zn,Fe)Sn(S,Se)4)以及銅黃銅礦。適用於作為在本 發明之薄膜光伏電池中之該P型半導體吸收劑材料的銅^ 銅礦係包含第la族-第lb族-第3a族-第6a族混合金屬二 屬化合物(chalcogenide)材料’係包括,舉例而古,一砸 化銅姻(CuInSe2)、二砸化銅鎵(CuGaSh)及二硒化銅銦嫁 (CuIm-xGaxSe2)。於薄膜光伏電池中作為吸收劑材料使用之 銅黃銅礦往往被發明領域中具有通常知識者稱為cigs材 料。較佳之p型半導體吸收劑材料係根據式
NaxCumlnu-d)Ga<iS(2+e)u-f)Se(2+e)f 者;# ψ,Λ ^ U<L<〇. 75 > 〇. 25<m 1 5、0姻、-〇. 2%0. 5、0<f3 ;其中,〇· k(L+m) y. 5 且HK2+e)f+mexi~f)} α·5°該p型半導體吸收劑 層視需要地完全覆蓋該後部觸點之表面(或其中該後部觸 點與該P型半導體吸收劑層之一側電性交界之裴置之基板 的表面)°或者’該p型半導體吸收劑材料視需要地覆蓋該 後部觸點(或該基板)表面之一部份。 於本發明之薄膜光伏電池中使用的n型半導體材料有 95168 7 201138133 時於該技藝中稱為“緩衝層材料”。該0型半導體層可包 含常規用於薄膜光伏電池中之任何η型半導體材料。較佳 地,所使用之η型半導體材料係選自硫化鎘(Cds);硫化鋅 (ZnS);硫化銦(IrnSa);硒化鋅(znse);硒化銦(inSe); 石西化鋅銦((Zn,In)Se);氧化鋅;硫化鋅;硫氧化鋅 (Zn(0, S));以及鎮鋅(MgZn)。更佳地,所使用之n型半導 體材料係選自硫化鎘(CdS)及硫化鋅(znS)。最佳地,所使 用之η型半導體材料係CdS。該n型半導體層視需要地完 全覆蓋該ρ型半導體吸收劑層之表面。或者,該η型半導 體層視需要地覆蓋該ρ型半導體吸收劑層表面之一部份。 該η型半導體層係以平均厚度為1〇至15〇奈米(nm), 更佳10至100 nm,再更佳40至1〇〇 nm,最佳4〇至60 nm 之層沈積於該ρ型半導體吸收劑層上。 於本發明之薄膜光伏電池中使用之介電有機材料可 係任何適用於作為電容器介電質使用之聚合物材料,其亦 展現橫跨400 rnn至1200 rim之電磁譜的之透明度。 較佳地,所使用之介電有機材料展現之電阻率為^1〇4歐 姆·公分(Ω · cm);更佳21〇5q · cm ;再更佳^1〇7〇 . cm ; 最^ΙίΤΩ . cm。較佳地’所使用之介電有機材料展現介 電否數為24,更佳25 ;最佳。較佳地,所使用之介電有 機材料為倍㈣纽(silsesquiQxane)如,减倍半石夕氧 烷、芳基倍半矽氧烷、氫化倍半矽氧烷(hydrid〇 silSeSquioxane)及其混合物。更佳地,所使用之介電有機 材料為CN1°一烧基倍半石夕氧炫。最佳地,所使用之介電有機 95168 8 201138133 201138133 材料係選自甲基倍半矽氧 石夕氧燒及τ基倍半魏卩^ 纽、丙基倍半 # 氧元。該介電有機材料視需要地完全 ==半導!層之表面。或者,該介電有機材料視需 要地覆盍該η型半導體層表面之一部份。 本發明之薄縣伏電池係包含純㈣ :=該透明導電棋之表面之間的介電有機材料層,該· "電有機材料層之平均厚度較佳為1G至15()⑽;更佳ι〇 至刚nm ;再更佳40至1〇〇 nm ;最佳4〇至卯⑽。 於本發明之薄膜光伏電池中使用之透明導電膜材料 可係任何常規透明導電材料。所❹之透料㈣㈣可 係選自透明導電氧化物(如’錮摻雜之氧化錫、氟摻雜之氧 化錫^經摻雜氧化鋅如紹摻雜氧化鋅、銦摻雜氧化锡);碳 奈米管網;石墨烯;透明導電聚合物如,聚(3, 4-伸乙基二 氧基噻吩),聚苯乙烯磺酸酯摻雜之聚(3,4_伸乙基二氧基 噻吩);聚(4,4-二辛基雙噻吩環戊烷);碘摻雜之聚(4,4_ 二辛基雙嗟吩環戊垸);以及 苯酉昆摻雜之聚(4, 4-二辛基雙嗟吩環戊烧);奈米網(如,銀 奈米線網、銀奈米片網、銀奈米管網、銀奈米顆粒網)。較 佳地,所使用之透明導電膜材料係鋁摻雜之氧化鋅。該透 明導電膜可視需要地完全覆蓋該介電有機材料層之表面或 僅選擇地覆蓋該介電有機材料層之表面的一部份。 本發明之薄膜光伏電池係包含具有平均厚度較佳為 10至150 nm ;更佳50至125 nm ;再更佳75至125 nm ; 最佳100至125 nm的透明導電膜。 95168 9 201138133 於本發明之薄膜光伏電池中使用之視需要之抗反射 材料可係選自適用於光伏電池之任何抗反射材料。該抗反 射層可視需要地完全覆蓋該透明導電膜之表面或可視需要 地選擇地覆蓋該透明導電膜之表面的一部份。 本發明之薄膜光伏電池視需要地包括與該透明導電 膜電性聯通之電極及與該後部觸點電性聯通之電極,以促 進將該薄膜光伏電池連接成電子網路。 本發明之薄膜光伏電池較佳係展現裝置效率> 9%;更 佳9至m,如根據ASTME927_〇5使用am i 5G光源來 模擬太陽光所測得者。 本發明之薄膜級電池之製造方法係包含:提供基 板;提供後部觸點;提供p型半導體吸收劑層,其中 後部觸點係與該P型半導體吸收劑層電性聯通;ς該^ 半導體吸收騎上提供η型半導體層;提供介電^的 層前體 '將該介電有機材料層前體施加至該η型半導體) 上’形成介電有機材料層;以及於該介電 成透明導電膜;視需要地,提#與該透 9 之前部電極。 Μ、與料明導電膜電性㈤ 於本發明之薄膜光伏電池製造方法中,係藉由任不 規加工方法提供後部觸點使之與該?型半導體^收則 性聯通。舉例而言’可藉由濺射、層壓、印刷、溶膠增 (sol gel)、化學浴沈積、電沈積、化學氣相沈積、物玉 相沈積H層沈積、沈積導電種子層、電鍵 解將該後部觸點施加至該基板之表面(或至該p型半導 95168 10 201138133 吸收劑層之一侧)上。視需要地,將該後部觸點呈均勻之層 沈積於該基板之表面(或於該p型半導體吸收劑層之一側) 上。視需要地,將該後部觸點施加至該基板之表面的一個 或多個部份上。 於本發明之薄膜光伏電池製造方法,藉由任何常規加 工方法將該p型半導體吸收劑層提供於該後部觸點之表面 (或於其中該後部觸點係與該P型半導體吸收劑層聯結之 應用中的基板的表面)上。舉例而言,可使用蒸發、溶液生 長、濺射、化學氣相沈積及液體沈積(如,濕塗、喷塗、旋 塗、刮刀塗)形成該p型半導體吸收劑層。視需要地,將該 P型半導體吸收劑層呈均勻之層施加至該後部觸點(或基 板)之整個表面上。視需要地,將該p型半導體吸收劑層 施加至該後部觸點(或基板)之表面的一個或多個部份上。 視需要地,該P型半導體吸收劑層係包含第la族-第 lb族-第3a族-第6a族材料。當該p型半導體吸收劑層包 含第la族-第lb族-第3a族-第6a族材料時,本發明之方 法可進一步包含:視需要地,提供包含鈉之第la族源;提 供第lb族源;提供第3a族源;視需要地提供第6a族硫源; 提供第6a族硒源;藉由視需要地使用該第la族源以沈積 鈉、使用該第lb族源以沈積第lb族材料、使用第3a族源 以沈積第3a族材料、視需要地使用該第6a族硫源以沈積 硫材料及使用該第6a族硒源以沈積硒材料而於該基板上 形成第la族-第lb族-第3a族-第6a族前體材料;處理該 前體材料以形成具有式NaiXnYnSpSeq之第la族-第lb族- 11 95168 201138133 第3a族-第6a族材料;其中,X係選自銅及銀之至少一種 第lb族材料’較佳係銅;γ係選自鋁、鎵及錮之至少一種 第3a族材料,較佳為銦及鎵;〇红£〇 75 ; 0. 25£m $1. 5 ; η 為 1 ; 〇Sp<2. 5 ;以及 〇<qs2. 5。較佳地,0. 5S(L+m) £1. 5 及 1. 8$ (p+q) $2· 5。較佳地,Y 為(Im-bGab),其中,〇$b$i。 更佳地,該第la族-第lb族-第3a族-第6a族材料係根據 5亥式 NaLCumln(卜d)GadS(2+e)(卜f)Se(2+e)f ;其中 ’ 0$Ls0. 75、 〇· 25,幻.5、〇切幻、一〇. 2分切.5、0<fS1;其中,〇. 5s(L+m) $1. 5 及 1. 8s{(2+e)f+(2+e)(卜〇} $2. 5。視需要地,將該 第la族源、第ib族源、第3a族源、第6a族硫源及第6a 族硒源之一者或多者合併。可藉由已知方法處理前體材料 之組分以形成具有式NaLXmYnSpSeq之第1&族_第lb族—第 3a族-第6a族材料。 適用於根據本發明使用之第la族源係包括用於使用 液體沈積技術、真空蒸發技術、化學氣相沈積技術、濺射 技術或用於㈣沈積於基板±之任何其他常規製程沈積納 (第la族材料)的任何常規載體(vehicle)。較佳地,該第 la族源可與第lb族源、第如族源、第以族硫源或第^ 族石西源之-者或多者合併。或者,可使用分開之第ia族源 來沈積納。 適用於根據本發明使用之第lb族源係包括用於使用 液體沈積技m蒸發技術、化學氣相沈積技術、濺射 技術或用於沈積第lb崎料之任何其他常規製程沈積第 lb族材料的任何常規載體。較佳地,該第ib族材料係包 95168 12 201138133 括銅及銀之至少一者;更佳係銅。視需要地,該第lb族源 除了含有第lb族材料之外,係含有硒(如,CuhSej、AghSei)。 適用於根據本發明使用之第3a族源係包括用於使用 液體沈積技術、真空蒸發技術、化學氣相沈積技術、濺射 技術或用於沈積第3a族材料之任何其他常規製程沈積第 3a族材料的任何常規載體。較佳地,該第3a族材料係包 括鎵、銦及鋁之至少一者;更佳係鎵及銦。視需要地,該 第3a族源除了含有第3a族材料之外,係含有硒(如,InSe、 GaSe)。視需要地,該第3a族源除了含有第3a族材料之 外,係含有銅及砸(如,CIGS奈米顆粒)。 適用於根據本發明使用之第6a族硫源係包括用於使 用液體沈積技術、真空蒸發技術、化學氣相沈積技術、減 射技術或用於沈積硫之任何其他常規製程沈積硫的任何常 規載體。 適用於根據本發明使用之第6a族硒源係包括用於使 用液體沈積技術、真空蒸發技術、化學氣相沈積技術、濺 射技術或用於沈積硒之任何其他常規製程沈積硒的任何常 規載體。 於本發明之薄膜光伏電池製造方法中,藉由任何常規 加工方法將該η型半導體層提供於p型半導體吸收劑層 上。舉例而言,可使用溶液生長(如,化學浴沈積)、滅射 及蒸發形成該η型半導體層。視需要地,將該η型半導體 層施加至該ρ型半導體吸收劑層之整個表面上。視需要 地,將該η型半導體層施加至該ρ型半導體吸收劑層之表 13 95168 201138133 面的一個或多個部份上。 於本發明之薄膜光伏電池製造方法中,藉由液體加工 技術將該介電有機層提供於n型半導體層上。適當之液體 加工技術係包括濕塗、噴塗、旋塗、刮刀塗、接觸印刷、 頂部饋料背面印刷、底部饋料背面印刷、喷嘴饋料背面印 刷、凹板印刷、微凹板印刷、背面微凹板印刷、逗號直接 印刷(comma direct printing)、輥塗、狹縫模具塗佈(slot die coating)、邁耶爾棒塗佈(meyerbar c〇ating)、唇直 接塗佈(lip direct coating)、雙唇直接塗佈、毛細管塗 佈、喷墨印刷、喷射沈積、喷灑熱解及喷灑沈積。視需要 地,將s亥介電有機層呈多層離散之層施加。視需要地,將 該介電有機層呈於該η型半導體層之整個表面上之單一均 勻層施加。視需要地,將該介電有機層呈於該η型半導體 層之表面的一個或多個部份上之單層施加。 較佳地,係自液體溶液將該介電有機材料沈積於該η 型半導體材料上。較佳地,於該介電有機材料之沈積過程 中,該η型半導體材料之溫度係低於i〇〇〇c。較佳地,將 該介電有機材料沈積於該n型半導體材料上之後,接著將 該介電有機材料於低於2〇〇〇C之溫度固化。較佳地,該介 電有機材料係以25至150 nm;更佳50至1〇〇 nm之臈厚 度沈積" 於本發明之薄膜光伏電池製造方法十,係藉由任何常 規加工方法將該透明導電膜提供於該介電有機層上。舉例 而言,可使用旋塗、喷灑沈積(包括喷灑熱解)、化學氣相 95168 14 201138133 沈積、物理氣相沈積及濺射來沈積該透明導電膜。視需 地,該透明導電膜係導電氧化物層(如,紹摻雜之氧化^ 層h其中’使用經溶液加工(如,經旋塗、經喷麗沈積) 之透明金屬奈米線網材料來沈積該透明導電膜。視需要 地’該透明導f祕透明導電氧化物,其巾,係使用化學 氣相沈積或濺射來沈積該透明導電膜。視需要地,該透明 導電膜係包含銀奈米棒。 Λ 將於下述實施例中詳細揭示本發明之某些具體實施 態樣。 實施例1至4:薄膜光伏電池 如下述般製備測試薄膜光伏電池:將鉬層濺射沈積於 玻璃基板之表面上’以形成平均厚度為丨微米(em)之後部 觸點。使用國家可再生能源實驗室(Nati〇nal RenewaMe Energy Laboratory)之3階段製程(如揭示於例如美國專利 第5, 441,897號及第5, 436, 204號中者)藉由共蒸發來生長 平均厚度為2//m之CIGS型吸收劑層(亦即,p型半導體吸 收劑層)。隨後,藉由化學浴沈積(CBD)自0. 〇〇15 MCdS〇4、 1·5Μ NH4〇H及0.0075M硫脲之60°C溶液將平均厚度如表1 中標注之CdS層(亦即,η型半導體層)沈積於該p型半導 體吸收劑層之表面上。隨後,自2.8%GR 650F甲基倍半矽 氧烷(自Technoglass,Ohio商購者)之丙二醇甲醚醋酸酯 (PGMEA)溶液,使用表1中標注之旋塗速度將倍半矽氧烷層 (亦即’介電有機層)旋塗於該CdS層上,隨後於200。(:固 化2分鐘。所沈積之倍半矽氧烷層的厚度係提供於表1中。 15 95168 201138133 ==〇3摻雜之Zn_呂摻雜之氧化鋅層(亦即, 透明導電膜)賤射沈積於該倍半石夕氧燒層上,沈積厚度為 120 nm。隨後’使用電子束蒸發透過影罩將錄/铭指電極沈 積於該鋁摻雜氧化鋅層上。該光伏電池之有效面積(active area)為0. 5平方公分(cm2)。自依據ASTME927-05並使用 AM 1. 5G光源模擬太陽光之電流-電壓曲綫測得該等電池的 效率。結果係提供於表1中。 表1 實施例 編號 旋轉速度 (rpm) 倍半矽氧烷厚 度(nm) CdS厚度 (nm) 效率 (%) 1 1000 86 50 9. 12 2 2500 51 50 10. 37 3 1000 86 100 9.46 4, *"» 1 2500 51 100 9.6 【圖式簡單說明】 無 【主要元件符號說明】 無 16 95168
Claims (1)
- 201138133 七、申請專利範圍: 1. 一種薄膜光伏電池,係包含: 基板; 提供於該基板上之後部觸點; 提供於該後部觸點上之P型半導體吸收劑層; 提供於該p型半導體吸收劑層上之η型半導體層; 提供於該η型半導體層上之介電有機材料層; 提供於該介電有機材料層上之透明導電膜;以及 視需要之提供於該透明導電膜上之抗反射層。 2. 如申請專利範圍第1項所述之薄膜光伏電池,其中,該 介電有機材料層係包含倍半;5夕氧烧。 3. 如申請專利範圍第2項所述之薄臈光伏電池,其中,該 介電有機材料層係具有10至15〇 nm之平均厚度。 4. 如申叫專利範圍第丨項所述之薄膜光伏電池,其中,該 基板係薄金屬箔或聚合物材料。 5. 如申請專利範圍第2項所述之薄膜光伏電池,其中,該 後部觸點係錮。 6. 如申請專利範圍第2項所述之薄膜光伏電池,其中,該 P型半導體吸收劑層係包含選自CdTe&根據式 NaLCumInu-d)GadS(2+e)u-f)Seme)f 之 CIGS 材料之 P 型半導體 吸收劑材料;其中,OSLSO. 75,0. 25$m 5,1, -〇· 2Se$0. 5,〇<fsi ;其中,〇 5幺L+m)£l· 5 且 i κ K2+e)f+(2+e)(l-f)}<2. 5 〇 7. 如申請專利範圍第6項所述之薄膜光伏電池,其中,該 1 95168 201138133 η型半導體層係包含琉化编且具有1G至15Gnm之平均 厚度。 8· tV::利範圍第7項所述之薄膜光伏電池’其中,該 透明導電膜係包含轉雜之氧化鋅且具有1()至15〇抓 之平均厚度。 9.=申請專利範圍第8項所述之薄膜光伏電池,其中,該 =陽:電池係展現裝置效㈣%,此係A· 使用AML5G光源來模擬 曲綫所測得。 电仙·电缓 10· —種製造薄膜光伏電池之方法,係包含: 提供基板; 提供後部觸點; 提供p型半導體吸收劑層,其 該P型半導體吸收劑層電性聯通x #觸點係與 於該P型半導體吸收劑層上提供_ 提供介電有機材料層前體; ’ 將該介電有機材料層前體施加至該n 且於該n型半導體層之表面上形成介電有: 於該介電有機材料層上形成透明導電膦、 極。視需要地,提供與該透明導電膜電性接简部電 95168 2 201138133 四、指定代表圖:本案無圖式 (一) 本案指定代表圖為:第()圖。 (二) 本代表圖之元件符號簡單說明: 五、本案若有化學式時,請揭示最能顯示發明特徵的化學式: 本案無指定代表化學式 2 95168
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US20130230933A1 (en) * | 2008-09-06 | 2013-09-05 | Soltrium Technology, Ltd. Shenzhen | Methods for fabricating thin film solar cells |
CN102782853A (zh) * | 2010-03-05 | 2012-11-14 | 第一太阳能有限公司 | 具有分级缓冲层的光伏器件 |
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US9252304B2 (en) * | 2012-10-04 | 2016-02-02 | International Business Machines Corporation | Solution processing of kesterite semiconductors |
US9246039B2 (en) | 2012-10-12 | 2016-01-26 | International Business Machines Corporation | Solar cell with reduced absorber thickness and reduced back surface recombination |
US20140109967A1 (en) * | 2012-10-24 | 2014-04-24 | Korea Institute Of Science And Technology | Thin film solar cells for windows based on low cost solution process and fabrication method thereof |
JP2014103264A (ja) * | 2012-11-20 | 2014-06-05 | Toshiba Corp | 光電変換素子および太陽電池 |
US9240501B2 (en) * | 2014-02-12 | 2016-01-19 | Solar Frontier K.K. | Compound-based thin film solar cell |
US20150287843A1 (en) * | 2014-04-03 | 2015-10-08 | Tsmc Solar Ltd. | Solar cell with dielectric layer |
US9530908B2 (en) | 2014-11-13 | 2016-12-27 | International Business Machines Corporation | Hybrid vapor phase-solution phase growth techniques for improved CZT(S,Se) photovoltaic device performance |
WO2016090179A1 (en) * | 2014-12-03 | 2016-06-09 | The Board Of Trustees Of The Leland Stanford Junior University | 2-terminal metal halide semiconductor/c-silicon multijunction solar cell with tunnel junction |
EP3365921A4 (en) | 2015-10-22 | 2019-07-10 | The Board of Trustees of the Leland Stanford Junior University | SOLAR CELL WITH AN OXID NANOPARTICLE BUFFER LAYER AND METHOD OF PREPARING THEREOF |
US11296244B2 (en) | 2016-09-20 | 2022-04-05 | The Board Of Trustees Of The Leland Stanford Junior University | Solar cell comprising a metal-oxide buffer layer and method of fabrication |
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US11271123B2 (en) | 2017-03-27 | 2022-03-08 | The Board Of Trustees Of The Leland Stanford Junior University | Alloyed halide double perovskites as solar-cell absorbers |
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US5436204A (en) | 1993-04-12 | 1995-07-25 | Midwest Research Institute | Recrystallization method to selenization of thin-film Cu(In,Ga)Se2 for semiconductor device applications |
DE69734183T8 (de) * | 1996-10-15 | 2007-03-29 | Matsushita Electric Industrial Co., Ltd., Kadoma | Sonnenzelle und Herstellungsverfahren |
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US6121541A (en) * | 1997-07-28 | 2000-09-19 | Bp Solarex | Monolithic multi-junction solar cells with amorphous silicon and CIS and their alloys |
AU777360B2 (en) * | 1999-10-27 | 2004-10-14 | Kaneka Corporation | Method of producing a thin-film photovoltaic device |
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EP1556902A4 (en) * | 2002-09-30 | 2009-07-29 | Miasole | MANUFACTURING DEVICE AND METHOD FOR PRODUCING THIN FILM SOLAR CELLS IN A LARGE SCALE |
WO2006005889A1 (fr) * | 2004-07-07 | 2006-01-19 | Saint-Gobain Glass France | Cellule solaire photovoltaique et module solaire |
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- 2011-03-23 TW TW100109839A patent/TW201138133A/zh unknown
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