JP2018125359A - 太陽電池デバイス及びその製造方法 - Google Patents
太陽電池デバイス及びその製造方法 Download PDFInfo
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- JP2018125359A JP2018125359A JP2017014801A JP2017014801A JP2018125359A JP 2018125359 A JP2018125359 A JP 2018125359A JP 2017014801 A JP2017014801 A JP 2017014801A JP 2017014801 A JP2017014801 A JP 2017014801A JP 2018125359 A JP2018125359 A JP 2018125359A
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Abstract
【解決手段】情報表示部と、情報表示部の情報表示面を保護する保護基板と、光電変換素子10とを有する太陽電池デバイスであって、光電変換素子10は、保護基板の情報表示部の情報表示面に対向する面に配置され、第1電極12と、第2電極16と、第1電極12と第2電極16との間に配置された光電変換層14と、第1電極12と光電変換層14との間に配置された電子輸送層13と、光電変換層14と第2電極16との間に配置された正孔輸送層15とを備え、第1電極12及び第2電極16は、透明電極材料からなり、光電変換層14は、有機無機ペロブスカイト化合物を含む。
【選択図】図3
Description
かかる態様では、装飾自由度の高い太陽電池デバイスとすることができる。
これによれば、透明性を有する有機無機ペロブスカイト化合物を得ることができ、太陽電池デバイスの装飾性を妨げることがない。
これによれば、透明性を有する有機無機ペロブスカイト化合物を確実に得ることができ、太陽電池デバイスの装飾性を妨げることがない。
これによれば、太陽電池デバイスの装飾性を妨げることなく、広い波長領域に対応することができ、光電変換効率に優れたものとなると共に、太陽電池デバイスの装飾性を向上させることができる。
これによれば、太陽電池デバイスの装飾性を妨げることなく、広い波長領域に対応することができ、更に光電変換効率に優れたものとなると共に、太陽電池デバイスの装飾性をより向上させることができる。
これによれば、第2電極の機能を害することなく、有機無機ペロブスカイト化合物の透明性を保持することができ、太陽電池デバイスの装飾性を妨げることがない。
これによれば、コスト性に優れた装飾自由度の高い太陽電池デバイスとすることができる。
かかる態様では、装飾自由度の高い太陽電池デバイスを提供することができる。
(太陽電池デバイス)
まず、太陽電池デバイスの一例である太陽電池式腕時計(以下、腕時計と称する)について、図面を参照して説明する。
電子輸送層13の平均膜厚としては、特に制限されないが、1μm以下が好ましく、更に100nm以下が好ましく、特に20nm以上60nm以下の範囲が好ましい。
(式中、Rは水素原子又は有機基を表し、Mは2価金属原子を表し、Xはハロゲン原子を表す。また、aは1又は2を表し、bは1を表し、a、b及びcはa+2b=cを満たす。即ち、cは、aが1のときに3であり、aが2のときに4である。)
正孔輸送層15の平均膜厚としては、特に制限されないが、100nm以下が好ましく、特に10nm以上80nm以下の範囲が好ましい。
次に、太陽電池デバイスである腕時計1の製造方法の一例について、図面を参照して説明する。本実施形態では、腕時計1の製造方法は公知の方法を適用することができるので、主に腕時計1に内蔵される光電変換素子10の製造方法について説明し、公知の製造方法については適宜説明を省略する。
(実施例1)
実施例1では、上述した実施形態1の光電変換素子10について、第1電極12としてFTOを用いたものを作製した。即ち、実施例1の光電変換素子10は、基板11と、第1電極12と、電子輸送層13と、光電変換層14と、正孔輸送層15と、第2電極16とが順次積層された構成である。
ガラス基板(基板11)上にITOからなる透明電極(第1電極12)を形成し、ITO電極基板を得たこと、及び、粒子サイズが10nmから25nmの酸化亜鉛(ZnO)ナノ粒子分散液を、スピンコート法によりITO電極基板上に塗布して150℃から300℃で焼成し、厚みが20nmから80nmのZnO層(電子輸送層13)を形成したこと以外は実施例1と同様にして、光電変換素子10を得た。
TiO2層上に酸化チタンのナノ粒子をエタノール溶媒に分散させた前駆体溶液を塗布し、100℃で脱脂し450℃で焼成し多孔質なTiO2層(電子輸送層13)を形成したこと、CH3NH3PbCl3のDMF溶媒に溶解して作製した前駆体溶液を用い、100℃で乾燥して無色透明の有機無機ペロブスカイト化合物からなる光電変換層14を形成したこと、及び、Ag又はAuからなる電極膜を6nm形成し、その上に酸化物電極であるITOを10nm形成して金属電極(第2電極16)を形成したこと以外は実施例1と同様にして、光電変換素子10を得た。
ガラス基板(基板11)上にITOからなる透明電極(第1電極12)を形成したこと以外は実施例3と同様にして、光電変換素子10を得た。
CH3NH3PbBr3のDMF溶媒に溶解して作製した前駆体溶液を用い、100℃で乾燥して橙色透明の有機無機ペロブスカイト化合物からなる光電変換層14を形成したこと以外は実施例3と同様にして、光電変換素子10を得た。
ガラス基板(基板11)上にITOからなる透明電極(第1電極12)を形成したこと以外は実施例5と同様にして、光電変換素子10を得た。
TiO2層上に酸化チタンのナノ粒子をエタノール溶媒に分散させた前駆体溶液を塗布し、100℃で脱脂し450℃で焼成し多孔質なTiO2層(電子輸送層13)を形成したこと、CH3NH3PbBr3−XClX(X=1or2)のDMF溶媒に溶解して作製した前駆体溶液を用い、100℃で乾燥して黄色透明の有機無機ペロブスカイト化合物からなる光電変換層14を形成したこと、及び、Ag又はAuからなる電極膜を6nm形成し、その上に酸化物電極であるITOを10nm形成して金属電極(第2電極16)を形成したこと以外は実施例2と同様にして、光電変換素子10を得た。
ガラス基板(基板11)上にITOからなる透明電極(第1電極12)を形成したこと以外は実施例7と同様にして、光電変換素子10を得た。
実施例1から実施例8で得られた光電変換素子10をカバーガラス4に接合し、内部に指針6、文字盤3、ムーブメント7等の部品を組み込んだ外装ケース2の開口部2aを封止して、外装ケース2にバンド5を装着して、図1に示した腕時計1をそれぞれ得た。
上記各実施形態で説明した光電変換素子を内蔵する腕時計は、カバーガラスの文字盤表面側の面の前面に光電変換素子を形成した構成を例示したが、これに限定されるわけではない。例えば、分割した光電変換素子を直列に配置してもよい。これにより、起電力を1.0Vから1.1Vにすることができ、光電変換効率を向上させることができる。
Claims (8)
- 情報表示部と、前記情報表示部の情報表示面を保護する保護基板と、光電変換素子とを有する太陽電池デバイスであって、
前記光電変換素子は、前記保護基板の前記情報表示部の前記情報表示面に対向する面に配置され、
第1電極と、
第2電極と、
前記第1電極と前記第2電極との間に配置された光電変換層と、
前記第1電極と前記光電変換層との間に配置された電子輸送層と、
前記光電変換層と前記第2電極との間に配置された正孔輸送層とを備え、
前記第1電極及び前記第2電極は、透明電極材料からなり、
前記光電変換層は、有機無機ペロブスカイト化合物を含むことを特徴とする太陽電池デバイス。 - 前記有機無機ペロブスカイト化合物は、ハロゲン化鉛と、ハロゲン化有機アンモニウムとの反応により生成される化合物であることを特徴とする請求項1に記載の太陽電池デバイス。
- 前記有機無機ペロブスカイト化合物は、CH3NH3PbBr3、CH3NH3PbBr2Cl、CH3NH3PbCl3及びCH3NH3PbBrCl2からなる群より選択される何れかの化合物であることを特徴とする請求項1又は請求項2に記載の太陽電池デバイス。
- 前記光電変換層は、無色透明の有機無機ペロブスカイト化合物と、有色透明の有機無機ペロブスカイト化合物とを含むことを特徴とする請求項1から請求項3の何れか一項に記載の太陽電池デバイス。
- 前記無色透明の有機無機ペロブスカイト化合物は、CH3NH3PbCl3であり、
前記有色透明の有機無機ペロブスカイト化合物は、CH3NH3PbBr3、CH3NH3PbBr2Cl及びCH3NH3PbBrCl2からなる群より選択される何れかの化合物であることを特徴とする請求項4に記載の太陽電池デバイス。 - 前記第2電極の前記透明電極材料は、金属ナノワイヤーであることを特徴とする請求項1から請求項5の何れか一項に記載の太陽電池デバイス。
- 前記第1電極は、前記保護基板上に設けられたことを特徴とする請求項1から請求項6の何れか一項に記載の太陽電池デバイス。
- 情報表示部の情報表示面を保護する保護基板の表面上に、第1電極と、電子輸送層と、光電変換層と、正孔輸送層と、第2電極とを順次積層して光電変換素子を形成し、
透明電極材料を用いて前記第1電極及び前記第2電極を形成し、
ハロゲン化鉛からなる層と、ハロゲン化有機アンモニウムからなる層とを形成し、これらの層を加熱することにより生成した有機無機ペロブスカイト化合物を用いて前記光電変換層を形成することを特徴とする太陽電池デバイスの製造方法。
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US15/873,439 US20180217561A1 (en) | 2017-01-30 | 2018-01-17 | Solar cell device and method for producing the same |
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EP3839649A1 (fr) * | 2019-12-20 | 2021-06-23 | Nivarox-FAR S.A. | Composant horloger rigide pour mecanisme oscillateur ou pour mecanisme d'echappement et mouvement d'horlogerie comportant un tel composant |
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