JP2013533637A - 太陽光発電装置及びその製造方法 - Google Patents
太陽光発電装置及びその製造方法 Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000031700 light absorption Effects 0.000 claims abstract description 38
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 34
- 239000001301 oxygen Substances 0.000 claims abstract description 34
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000000203 mixture Substances 0.000 claims abstract description 15
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000011787 zinc oxide Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000872 buffer Substances 0.000 description 37
- 238000004544 sputter deposition Methods 0.000 description 13
- 229910052733 gallium Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 8
- 229910052738 indium Inorganic materials 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 4
- 239000002243 precursor Substances 0.000 description 4
- 239000011669 selenium Substances 0.000 description 4
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 3
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000000224 chemical solution deposition Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- YNLHHZNOLUDEKQ-UHFFFAOYSA-N copper;selanylidenegallium Chemical compound [Cu].[Se]=[Ga] YNLHHZNOLUDEKQ-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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Abstract
【選択図】図2
Description
化学式1:(M、N)OX
化学式2:(M、N)OY
ここで、M及びNは金属である。
より具体的には、前記MはZnまたはSnからなり、NはAlまたはGaからなることができる。
また、ここで、0<X<1、0<Y<1であり、XはYより小さい。
ここで、0.90<X<0.95で、0.96<Y<1である。
より具体的には、前記第1酸化物は以下の化学式3で表し、前記第2酸化物は以下の化学式4で表すことができる。
化学式3:(Zn、Al)OX、ここで、0.90<X<0.95である。
化学式4:(Zn、Al)OY、ここで、0.96<Y<1である。
前記第1ウィンドウ層620は相対的に高い酸素組成比を有するので、低い面抵抗及び高いキャリア濃度を有する。このように、高い電気的特性を有する前記第1ウィンドウ層620は、殆どの電流が流れるウィンドウ層600の下部に位置する。これによって、前記ウィンドウ層600は、全体的に向上した電気的特性を有することができる。
特に、前記第1ウィンドウ層610は相対的に薄い厚さに形成されても、高い電気的特性を有することができる。すなわち、前記ウィンドウ層600で電流が主に流れる部分は、相対的に低い厚さの下部領域に該当するので、前記第1ウィンドウ層610は前記第2ウィンドウ層620より薄い厚さを有することができる。
また、前記第2ウィンドウ層620は前記第1ウィンドウ層610より向上した透過率を有するので、前記第1ウィンドウ層620の厚さが大きいほど、前記ウィンドウ層600は高い光学的特性を有することができる。したがって、前記第2ウィンドウ層620は前記第1ウィンドウ層610より大きい厚さを有する。
Claims (18)
- 基板と、
前記基板上に配置される裏面電極層と、
前記裏面電極層上に配置される光吸収層と、
前記光吸収層上に配置されて、第1酸化物を含む第1ウィンドウ層と、及び
前記第1ウィンドウ層上に配置されて、前記第1酸化物より酸素組成比がさらに高い第2酸化物を含む第2ウィンドウ層とを含む太陽光発電装置。 - 前記第1酸化物は以下の化学式1で表され、前記第2酸化物は以下の化学式2で表されることを特徴とする請求項1に記載の太陽光発電装置。
化学式1:(M、N)OX
化学式2:(M、N)OY
ここで、M及びNは金属であり、0<X<1、0<Y<1であり、XはYより小さい。 - 第1ウィンドウ層の厚さは、40nm乃至120nmであることを特徴とする請求項1に記載の太陽光発電装置。
- 前記第1酸化物及び前記第2酸化物はジンクオキサイド、インジウムスズ酸化物及びインジウム亜鉛酸化物で構成されるグループから選択されて、前記第1酸化物及び前記第2酸化物は導電型不純物がドーピングされることを特徴とする請求項1に記載の太陽光発電装置。
- 前記ウィンドウ層から延長されて前記裏面電極層に接続される接続部を含み、
前記光吸収層には前記裏面電極層を露出する第1貫通溝が形成されて、
前記接続部は前記第1貫通溝に配置されることを特徴とする請求項1に記載の太陽光発電装置。 - 前記接続部は、
前記第1ウィンドウ層と一体で形成されて、前記裏面電極層に直接接続される第1導電層と、
前記第2ウィンドウ層と一体で形成されて、前記第1導電層上に配置される第2導電層を含むことを特徴とする請求項5に記載の太陽光発電装置。 - 前記第1導電層は前記第1酸化物を含み、前記第2導電層は前記第2酸化物を含むことを特徴とする請求項6に記載の太陽光発電装置。
- 前記第2ウィンドウ層の透過率は前記第1ウィンドウ層の透過率より高いことを特徴とする請求項1に記載の太陽光発電装置。
- 前記第1ウィンドウ層の抵抗は前記第2ウィンドウ層の抵抗より低いことを特徴とする請求項1に記載の太陽光発電装置。
- 前記第1ウィンドウ層は以下の化学式3で表される物質を含み、前記第2ウィンドウ層は以下の化学式4で表される物質を含むことを特徴とする請求項1に記載の太陽光発電装置。
化学式3:(Zn、Al)OX、ここで、0.90<X<0.95である。
化学式4:(Zn、Al)OY、ここで、0.96<Y<1である。 - 基板と、
前記基板上に配置される裏面電極層と、
前記裏面電極層上に配置される光吸収層と、
前記光吸収層上に配置されるウィンドウ層と、
前記ウィンドウ層から延長されて前記光吸収層を貫通して前記裏面電極層に接続される接続部を含み、
前記接続部は、
前記裏面電極層に直接接続されて第1酸化物を含む第1導電層と、
前記第1導電層上に配置されて前記第1酸化物より酸素組成比が高い第2酸化物を含む第2導電層を含む太陽光発電装置。 - 前記ウィンドウ層は、
前記第1酸化物を含んで前記第1導電層と一体で形成される第1ウィンドウ層と、
前記第2酸化物を含み、前記第2導電層と一体で形成される第2ウィンドウ層を含むことを特徴とする請求項11に記載の太陽光発電装置。 - 前記第1酸化物は以下の化学式1で表され、前記第2酸化物は以下の化学式2で表されることを特徴とする請求項11に記載の太陽光発電装置。
化学式1:(M、N)OX
化学式2:(M、N)OY
ここで、M及びNは金属であり、0<X<1、0<Y<1であり、XはYより小さい。 - 前記第1酸化物は前記第2酸化物より低い抵抗を有することを特徴とする請求項11に記載の太陽光発電装置。
- 第1導電層の厚さは40nm乃至120nmであることを特徴とする請求項11に記載の太陽光発電装置。
- 基板上に裏面電極層を形成する段階と、
前記裏面電極層上に光吸収層を形成する段階と、
前記光吸収層上に第1酸化物を含む第1ウィンドウ層を形成する段階と、
前記第1ウィンドウ層上に前記第1酸化物より酸素組成比が高い第2酸化物を含む第2ウィンドウ層を形成する段階と、を含む太陽光発電装置の製造方法。 - 前記第1ウィンドウ層を形成する段階及び前記第2ウィンドウ層を形成する段階で同一ターゲットが使用されて、
前記第2ウィンドウ層を形成する段階は酸素雰囲気で前記ターゲットを使用して、前記第2酸化物を前記第1ウィンドウ層上に蒸着する段階を含むことを特徴とする請求項16に記載の太陽光発電装置の製造方法。 - 前記第2ウィンドウ層を形成する段階において、
前記酸素の割合は、前記第2ウィンドウ層が形成されるチャンバーの全体気体の約0.05vol%乃至約1.5vol%であることを特徴とする請求項17に記載の太陽光発電装置の製造方法。
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CN103038894A (zh) | 2013-04-10 |
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