JP6657073B2 - 化合物半導体太陽電池の製造方法 - Google Patents
化合物半導体太陽電池の製造方法 Download PDFInfo
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- JP6657073B2 JP6657073B2 JP2016510449A JP2016510449A JP6657073B2 JP 6657073 B2 JP6657073 B2 JP 6657073B2 JP 2016510449 A JP2016510449 A JP 2016510449A JP 2016510449 A JP2016510449 A JP 2016510449A JP 6657073 B2 JP6657073 B2 JP 6657073B2
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- compound semiconductor
- solar cell
- layer
- polyimide film
- semiconductor layer
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- 239000004065 semiconductor Substances 0.000 title claims description 95
- 150000001875 compounds Chemical class 0.000 title claims description 94
- 238000000034 method Methods 0.000 title claims description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 23
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- 229910052751 metal Inorganic materials 0.000 claims description 63
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- 239000002243 precursor Substances 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 29
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- 230000015572 biosynthetic process Effects 0.000 claims description 25
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- 230000004580 weight loss Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
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- 239000001301 oxygen Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- CLYVDMAATCIVBF-UHFFFAOYSA-N pigment red 224 Chemical compound C=12C3=CC=C(C(OC4=O)=O)C2=C4C=CC=1C1=CC=C2C(=O)OC(=O)C4=CC=C3C1=C42 CLYVDMAATCIVBF-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- SPVXKVOXSXTJOY-UHFFFAOYSA-N selane Chemical compound [SeH2] SPVXKVOXSXTJOY-UHFFFAOYSA-N 0.000 description 1
- 229910000058 selane Inorganic materials 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- WGPCGCOKHWGKJJ-UHFFFAOYSA-N sulfanylidenezinc Chemical group [Zn]=S WGPCGCOKHWGKJJ-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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- H01L31/0264—Inorganic materials
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Description
ポリイミド前駆体を熱イミド化する際の加熱温度は、300℃以上500℃以下が好ましい。
支持基体に含まれるアルカリ金属はナトリウムが好ましい。支持基体としては、ソーダライムガラスが好ましく用いられる。
以下の実験例では、アルカリ金属を含む支持基体上にポリイミド前駆体のフィルムが形成された状態で熱イミド化を行った場合と、ポリイミド前駆体を支持基体から剥離後に熱イミドを行った場合との差について検討を行った。
ポリテトラフルオロエチレン製シール栓付き撹拌器、撹拌翼、および窒素導入管を備えたガラス製セパラブルフラスコに、脱水したN,N‐ジメチルアセトアミド(DMAc)8500g、およびパラフェニレンジアミン(PDA)40.31gを投入し、溶液を油浴で50℃に加熱しながら窒素雰囲気下で30分間撹拝した。原料が均一に溶解したことを確認した後、3,3’,4,4’‐ビフェニルテトラカルボン酸二無水物(BPDA)109.41gを加え、原料が完全に溶解するまで窒素雰囲気下で10分間撹拝しながら、溶液の温度を約80℃に調整した。加熱しながら撹拌を3時間続け、さらにDMAcを153.8g加えて撹拝し、23℃における粘度が25Pa・sのポリアミド酸溶液を得た。
支持基体上でポリイミド前駆体溶液を仮乾燥後に、支持基体から剥離することなく熱イミド化を実施した。具体的には、支持基体として、厚み2mmのソーダライムガラス(Na2O含有率:12〜16%)を用い、このソーダライムガラス上に、上記のポリイミド前駆体溶液をバーコート法にて塗布し、80℃にて予備加熱(仮乾燥)を行った。その後、大気雰囲気下にて480℃まで昇温して、熱イミド化を行った後、室温まで徐冷して、ソーダライムガラス支持基体上に厚み12μmのポリイミドフィルムが形成された積層体を得た。
実験例1と同様に仮乾燥までを実施した後、ポリイミド前駆体フィルムを支持基体から剥離した。このポリイミド前駆体フィルムを無アルカリガラス上に貼り合わせ、480℃に加熱することにより、熱イミド化を実施した。
上記の結果をもとに、以下に示す実施例においては、ソーダライムガラス上で仮乾燥と熱イミド化を実施したポリイミドフィルムを用いて太陽電池フィルムを作製した。
上記実験例1で得られた支持基体とポリイミドフィルムとの積層体をスパッタリング装置に導入し、Moターゲットを用い、アルゴン雰囲気中で、ポリイミドフィルム上に600nmの膜厚のMo金属層を製膜した。製膜初期の50nmは、基板温度:室温、圧力:1Pa、投入パワー密度:13.2W/cm2の条件で製膜を行った。その後、圧力0.6:Pa、投入パワー密度:8.8W/cm2に条件を変更して、残りの膜厚部分を製膜した。
参考例1では、ソーダライムガラス上にポリイミドフィルムを製膜しなかった点を除いて、実施例1と同様に太陽電池を作製した。すなわち、実施例1で支持基体として使用したソーダライムガラス上に、直接Mo金属層を形成し、その上にCIGS層、バッファー層、高抵抗層、および透明電極層を形成した。
比較例1では、支持基体として、ソーダライムガラスに代えて無アルカリガラスを用いた点を除いて、実施例1と同様に太陽電池を作製した。
上記実施例、比較例および参考例の太陽電池の光電変換特性を、ソーラーシミュレータを用いて評価した。短絡電流密度(Jsc)、開放電圧(Voc)、曲線因子(FF)、および変換効率(η)を表2に示す。また、実施例1および比較例1にて使用したポリイミドフィルム(熱イミド化後、金属層形成前)のA面側表面から約1μmの範囲のSIMS分析(PhysicalElectronics社製ADEPT1010)により得られたNa含有量の厚み方向プロファイルを図3に示す。
2. ポリイミドフィルム
21. ポリイミド前駆体フィルム
3. 金属層
4. 化合物半導体層
5. バッファー層
6. 高抵抗層
7. 透明電極層
8.9. 取り出し電極
100. 太陽電池
101. 太陽電池フィルム
Claims (9)
- ポリイミドフィルム上に、金属層およびカルコパイライト型化合物半導体層を、この順に有する太陽電池の製造方法であって、
ソーダライムガラス上にポリイミド前駆体溶液を流延塗布する塗布工程;
前記ポリイミド前駆体を加熱によりイミド化して、前記ソーダライムガラス上に接してポリイミドフィルムを備える積層体を形成するイミド化工程;
前記積層体の前記ポリイミドフィルム上に金属層を形成する金属層形成工程;および
前記金属層上にカルコパイライト型化合物半導体層を形成する半導体層形成工程
を、この順に有することにより、前記ソーダライムガラスから前記ポリイミドフィルムおよび前記金属層を介して、前記カルコパイライト型化合物半導体層にナトリウムを拡散移行させる、化合物半導体太陽電池の製造方法。 - 前記半導体層形成工程におけるカルコパイライト型化合物半導体層の製膜温度Tが500℃より高い、請求項1に記載の化合物半導体太陽電池の製造方法。
- 前記ポリイミドフィルムの窒素ガス雰囲気下昇温速度10℃/分で測定した1%重量減少温度Td1が、前記半導体層形成工程におけるカルコパイライト型化合物半導体層の製膜温度Tよりも高い、請求項1または2に記載の化合物半導体太陽電池の製造方法。
- 前記ポリイミドフィルムの窒素ガス雰囲気下昇温速度10℃/分で測定した1%重量減少温度Td1が560℃よりも高い、請求項1〜3のいずれか1項に記載の化合物半導体太陽電池の製造方法。
- 前記ポリイミド前駆体溶液が、アミノ基を含有するアルコキシシラン化合物とポリアミド酸とを溶液中で反応させることにより得られるアルコキシシラン変性ポリアミド酸溶液である、請求項1〜4のいずれか1項に記載の化合物半導体太陽電池の製造方法。
- 前記イミド化工程における加熱温度が、300℃以上500℃以下である、請求項1〜5のいずれか1項に記載の化合物半導体太陽電池の製造方法。
- 前記金属層がモリブデンである、請求項1〜6のいずれか1項に記載の化合物半導体太陽電池の製造方法。
- 前記半導体層形成工程において、前記カルコパイライト型化合物半導体層上に、湿式法によりバッファー層が形成される、請求項1〜7のいずれか1項に記載の化合物半導体太陽電池の製造方法。
- 前記半導体層形成工程後に、前記ソーダライムガラスと前記ポリイミドフィルムとを剥離する剥離工程を有する、請求項1〜8のいずれか1項に記載の化合物半導体太陽電池の製造方法。
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WO2018020333A1 (en) | 2016-07-29 | 2018-02-01 | Semiconductor Energy Laboratory Co., Ltd. | Separation method, display device, display module, and electronic device |
TW201808628A (zh) * | 2016-08-09 | 2018-03-16 | Semiconductor Energy Lab | 半導體裝置的製造方法 |
KR102425705B1 (ko) | 2016-08-31 | 2022-07-28 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치의 제작 방법 |
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JP2975766B2 (ja) | 1992-05-13 | 1999-11-10 | 三洋電機株式会社 | 可撓性のある薄膜太陽電池の製造方法 |
US5356656A (en) * | 1993-03-26 | 1994-10-18 | Industrial Technology Research Institute | Method for manufacturing flexible amorphous silicon solar cell |
JP2003179238A (ja) * | 2001-12-10 | 2003-06-27 | Matsushita Electric Ind Co Ltd | 薄膜太陽電池の製造方法 |
US20070215195A1 (en) | 2006-03-18 | 2007-09-20 | Benyamin Buller | Elongated photovoltaic cells in tubular casings |
JP2008266416A (ja) * | 2007-04-18 | 2008-11-06 | Ube Ind Ltd | ポリイミドフィルムの製造方法およびポリイミドフィルム |
US8921691B2 (en) | 2008-03-21 | 2014-12-30 | National Institute Of Advanced Industrial Science And Technology | Solar cell and manufacturing method thereof |
US9373735B2 (en) | 2008-05-20 | 2016-06-21 | Ube Industries, Ltd. | Polyimide-metal laminate and solar cell |
WO2010074276A1 (ja) * | 2008-12-26 | 2010-07-01 | 京セラ株式会社 | 光電変換モジュール |
JP2010202729A (ja) * | 2009-03-02 | 2010-09-16 | Hitachi Chemical Dupont Microsystems Ltd | フレキシブルデバイス基板用ポリイミド前駆体樹脂組成物及びそれを用いたフレキシブルデバイスの製造方法、フレキシブルデバイス |
JP5381562B2 (ja) * | 2009-09-29 | 2014-01-08 | 大日本印刷株式会社 | 薄膜太陽電池及びその製造方法 |
EP2502955A4 (en) * | 2009-11-20 | 2013-05-01 | Ube Industries | AROMATIC POLYIMIDE FILM, LAMINATE THEREOF AND SOLAR CELL THEREWITH |
KR20130098177A (ko) * | 2010-06-18 | 2013-09-04 | 아사히 가라스 가부시키가이샤 | Cigs 형 태양 전지 및 그것을 위한 전극이 형성된 유리 기판 |
WO2012141293A2 (ja) * | 2011-04-15 | 2012-10-18 | 東洋紡績株式会社 | 積層体とその製造方法および、この積層体を用いたデバイス構造体の作成方法 |
JP5811492B2 (ja) * | 2011-04-28 | 2015-11-11 | 三菱化学株式会社 | デバイス製造方法 |
KR20130109786A (ko) * | 2012-03-28 | 2013-10-08 | 삼성에스디아이 주식회사 | 태양전지 및 이의 제조방법 |
WO2013172355A1 (ja) * | 2012-05-14 | 2013-11-21 | 新日鉄住金化学株式会社 | ポリイミド層含有フレキシブル基板、ポリイミド層含有フレキシブル太陽電池用基板、フレキシブル太陽電池およびそれらの製造方法 |
WO2013191052A1 (ja) * | 2012-06-20 | 2013-12-27 | 東洋紡株式会社 | 積層体の作成方法および、積層体および、この積層体を利用したデバイス付き積層体の作成方法および、デバイス付き積層体 |
WO2014038409A1 (ja) * | 2012-09-10 | 2014-03-13 | 旭硝子株式会社 | 太陽電池用ガラス基板およびそれを用いた太陽電池 |
US10435510B2 (en) * | 2013-02-07 | 2019-10-08 | Kaneka Corporation | Alkoxysilane-modified polyamic acid solution, laminate and flexible device each produced using same, and method for producing laminate |
KR101606990B1 (ko) * | 2013-06-19 | 2016-03-28 | 주식회사 엘지화학 | 적층체 및 이를 포함하는 박막형 태양전지 |
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EP3125308A1 (en) | 2017-02-01 |
WO2015147106A1 (ja) | 2015-10-01 |
JPWO2015147106A1 (ja) | 2017-04-13 |
US9893228B2 (en) | 2018-02-13 |
US20170110620A1 (en) | 2017-04-20 |
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