JP2012015251A - 光電変換素子及び太陽電池 - Google Patents
光電変換素子及び太陽電池 Download PDFInfo
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- JP2012015251A JP2012015251A JP2010149044A JP2010149044A JP2012015251A JP 2012015251 A JP2012015251 A JP 2012015251A JP 2010149044 A JP2010149044 A JP 2010149044A JP 2010149044 A JP2010149044 A JP 2010149044A JP 2012015251 A JP2012015251 A JP 2012015251A
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Abstract
Description
項2. π電子アクセプターとしてC60フラーレンまたはその類縁体を含むことを特徴とする項1に記載の光電変換素子。
項3. 式(I)で表されるπ電子ドナーが正電荷と負電荷の両方の輸送について10-1 cm2 V-1 s-1以上の高速のキャリヤ移動度を示すことを特徴とする項1又は2に記載の光電変換素子。
項4. 式(I)の化合物が、ゲル、高分子中に含まれる組成物であることを特徴とする光電変換素子。
項5. π電子ドナーが重合性官能基を有し、重合性官能基を光重合してなる薄膜を含む項1〜4のいずれかに記載の光電変換素子。
項6. 式(I)の化合物とπ電子アクセプターが混合組成物を形成し、それを活性相として持つ項1〜5のいずれかに記載の光電変換素子。
項7. 前記組成物を有機溶媒に溶かされた溶液を塗布または印刷してなることを特徴とする項6に記載の光電変換素子。
項8. 項1〜7のいずれかに記載の光電変換素子を含む薄膜太陽電池。
上記ジシアノ化合物において2つのR基が異なるか(例えばペンチル基とヘキシル基)、或いは、Rが異なる2種以上のジシアノ化合物を原料として用いれば、一般式(I)においてRが2種以上である化合物を得ることができる。
図3は、薄膜太陽電池のための光電変換素子の一例を示す断面図である。
下記の化合物(I)をITOをコートしたガラス板を両電極としたサンドイッチ型セルのセルギャップ(約15ミクロン)に液体温度で毛細管現象を利用して注入、注意深く冷却した。
該化合物をクロロホルムに溶解させ、スピンコータでガラス基板上に塗布し製膜したところ、良好な製膜性を示すことが判った。
素子作製方法:幅 2 mmのITO透明電極がパターン化された石英基板上に高分子導電膜(PEDOT:PSS)をスピンコート(3000 rpm, 60 sec)して電極を作製した。C6PcH2:PCBMを重量比1:1で混合したクロロホルム溶液(20mg/ml)をAr雰囲気中で撹拌して調製し、基板上にスピンコート(500rpm,60sec)して薄膜を形成させた。Al電極を2 mm幅のマスクパターンを通して真空蒸着(蒸着速度:5 A/sec)させ、負極側電極を作製した。素子の有効面積は2×2mm2であった。
Claims (8)
- π電子アクセプターとしてC60フラーレンまたはその類縁体を含むことを特徴とする請求項1に記載の光電変換素子。
- 式(I)で表されるπ電子ドナーが正電荷と負電荷の両方の輸送について10-1 cm2 V-1 s-1以上の高速のキャリヤ移動度を示すことを特徴とする請求項1又は2に記載の光電変換素子。
- 式(I)の化合物が、ゲル、高分子中に含まれる組成物であることを特徴とする光電変換素子。
- π電子ドナーが重合性官能基を有し、重合性官能基を光重合してなる薄膜を含む請求項1〜4のいずれかに記載の光電変換素子。
- 式(I)の化合物とπ電子アクセプターが混合組成物を形成し、それを活性相として持つ請求項1〜5のいずれかに記載の光電変換素子。
- 前記組成物を有機溶媒に溶かされた溶液を塗布または印刷してなることを特徴とする請求項6に記載の光電変換素子。
- 請求項1〜7のいずれかに記載の光電変換素子を含む薄膜太陽電池。
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