JP5978464B2 - 太陽電池素子を製造する方法 - Google Patents
太陽電池素子を製造する方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title description 17
- 150000001875 compounds Chemical class 0.000 claims description 45
- 239000007864 aqueous solution Substances 0.000 claims description 43
- 239000004065 semiconductor Substances 0.000 claims description 24
- 239000011261 inert gas Substances 0.000 claims description 13
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 239000010931 gold Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000005566 electron beam evaporation Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- ORQBXQOJMQIAOY-UHFFFAOYSA-N nobelium Chemical compound [No] ORQBXQOJMQIAOY-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Description
項目1. 太陽電池素子101を製造する方法であって、
積層体1およびチャンバー5を用意する工程(a)、ここで
前記積層体1は、p側III族−V族化合物電極層2、p型III族−V族化合物半導体層31、n型III族−V族化合物半導体層32、およびn型III族−V族化合物電極層4を具備し、
前記n型III族−V族化合物電極層4は、第1面4aおよび第2面4bを具備しており、
前記p型III族−V族化合物半導体層31は、前記p側III族−V族化合物電極層2およびn型III族−V族化合物半導体層32の間に挟まれており、
前記n型III族−V族化合物半導体層32は、前記p型III族−V族化合物半導体層31および第1面4aの間に挟まれており、
第2面4bは、前記積層体1の表面に露出しており、
前記チャンバー5は、水溶液6および不活性ガス7を有し、
工程(a)の後、第2面4bが前記水溶液6に浸漬されるように、前記積層体1を前記水溶液6に接触させる工程(b)、ここで
工程(b)の後、前記不活性ガス7の雰囲気下、アノード電極71および前記積層体1との間に電圧差を印加し、前記第2面4bにZn層81を形成する工程(c)、ここで、
前記チャンバー5は前記不活性ガス7で満たされており、
前記水溶液6は、1mM以上5M以下の濃度を有するZn2+イオンを含有しており、
前記水溶液6は、酸素を含有せず、
前記水溶液6には、前記アノード電極71が接触しており、
前記積層体1はカソード電極として用いられ、
前記水溶液6は10℃以上60℃以下の温度を有しており、
前記Zn層81は、凸凹構造をその表面に有しており、および
工程(c)の後、前記Zn層81を酸素に曝し、前記Zn層81をZnO結晶層82に変質させる工程(d)。
項目2.前記項目1に記載の方法であって、
前記工程(d)では、前記Zn層81は空気に曝される。
項目3.前記項目1に記載の方法であって、
前記工程(a)において、前記n型III族−V族化合物電極層4はGaAs層42を具備しており、
前記第2面4bには前記GaAs層42が露出している。
最初に、工程(a)では、積層体1およびチャンバー5が用意される。
工程(b)が工程(a)の後に行われる。
工程(c)が工程(b)の後に行われる。
工程(d)が工程(c)の後に行われる。
以下の実験例は本発明をより詳細に説明する。
図1に示されるように、積層体が以下のように用意された。
ここで、Jsc=Isc/S
有効受光面積S=25000平方マイクロメートル
結果は、表1に示される。
Zn(NO3)2水溶液が5Mの濃度を有すること以外は、実施例1と同様の実験が行われた。結果は図13および表1に示される。
Zn(NO3)2水溶液が60℃の温度を有すること以外は、実施例1と同様の実験が行われた。結果は図14および表1に示される。
Zn(NO3)2水溶液が5Mの濃度および60℃の温度を有すること以外は、実施例1と同様の実験が行われた。結果は図15および表1に示される。
Zn(NO3)2水溶液が7Mの濃度を有すること以外は、実施例1と同様の実験が行われた。結果は図16および表1に示される。
Zn(NO3)2水溶液が70℃の温度を有すること以外は、実施例1と同様の実験が行われた。結果は図17および表1に示される。
チャンバー5が大気によって充填されたこと以外は、実施例1と同様の実験が行われた。結果は図18および表1に示される。
2 p側III族−V族化合物電極層
21 p側コンタクト層
22 p側窓層
31 p型III族−V族化合物半導体層
31a p型ベース層
32 n型III族−V族化合物半導体層
32a n型エミッタ層
4 n型III族−V族化合物電極層
41 n側窓層
42 n側コンタクト層
44 犠牲層
45 基板
5 チャンバー
6 水溶液
7 不活性ガス
71 アノード電極
72 参照電極
81 Zn層
82 ZnO結晶層
83 表面電極
84 裏面電極
85 絶縁膜
86 開口部
861 第2のマスク
87 表面電極配線部
88 裏面電極配線部
9 支持基板
93 ZnO透明電極層
101 太陽電池素子
102 集光レンズ
103 放熱板
104 反射防止膜
105 スペーサ
110 太陽電池
Claims (3)
- 太陽電池素子を製造する方法であって、以下を具備する:
積層体およびチャンバーを用意する工程(a)、ここで
前記積層体は、p側III族−V族化合物電極層、p型III族−V族化合物半導体層、n型III族−V族化合物半導体層、およびn型III族−V族化合物電極層を具備し、
前記n型III族−V族化合物電極層は、第1面および第2面を具備しており、
前記p型III族−V族化合物半導体層は、前記p側III族−V族化合物電極層およびn型III族−V族化合物半導体層の間に挟まれており、
前記n型III族−V族化合物半導体層は、前記p型III族−V族化合物半導体層および第1面の間に挟まれており、
第2面は、前記積層体1の表面に露出しており、
前記チャンバーは、水溶液および不活性ガスを有し、
工程(a)の後、第2面が前記水溶液に浸漬されるように、前記積層体を前記水溶液に接触させる工程(b)、ここで
工程(b)の後、前記不活性ガスの雰囲気下、アノード電極および前記積層体との間に電圧差を印加し、前記第2面にZn層を形成する工程(c)、ここで、
前記チャンバーは前記不活性ガスで満たされており、
前記水溶液は、1mM以上5M以下の濃度を有するZn2+イオンを含有しており、
前記水溶液からは、酸素が除去されており、
前記水溶液には、前記アノード電極が接触しており、
前記積層体はカソード電極として用いられ、
前記水溶液は10℃以上60℃以下の温度を有しており、
前記Zn層は、凸凹構造をその表面に有しており、および
工程(c)の後、前記Zn層を酸素に曝し、前記Zn層をZnO結晶層に変質させる工程(d)。 - 請求項1に記載の太陽電池素子を製造する方法であって、
前記工程(d)では、前記Zn層は空気に曝される。 - 請求項1に記載の太陽電池素子を製造する方法であって、
前記工程(a)において、前記n型III族−V族化合物電極層はGaAs層を具備しており、
前記第2面には前記GaAs層が露出している。
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