成果報告書詳細
管理番号20110000000604
タイトル*平成22年度中間年報 最先端研究開発支援プログラム/低炭素社会に資する有機系太陽電池の開発/高効率有機薄膜太陽電池の作製(有機薄膜太陽電池の耐久性予測手法と高耐久性素子の開発)
公開日2011/8/5
報告書年度2010 - 2010
委託先名住友化学株式会社
プロジェクト番号P09026
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:1. 研究開発の内容及び成果等 サブテーマ(14) (14)-1 有機薄膜太陽電池の耐久性予測手法と高耐久性素子の開発 (平成22年度第1四半期~第4四半期実施) 本研究では、サブテーマ(14)のうち、「有機薄膜太陽電池の耐久性予測手法と高耐久性素子の開発」を実施する。有機薄膜太陽電池の耐久性予測手法と高耐久性素子の開発有機薄膜太陽電池の耐久性評価手法を確立し、高耐久性素子を開発する。有機薄膜太陽電池は、シリコン系などの太陽電池とは全く異なる材料や構造のため、劣化モードはシリコン系太陽電池と全く異なり、新たに耐久性評価法を確立する必要がある。
英文要約Title: Funding Program for World-Leading Innovative R&D on Science and Technology. Development of Organic Photovoltaics toward a Low-Carbon Society: Pioneering Next Generation Solar Cell Technologies and Industries via Multi-manufacturer Cooperation (Sub-theme: 14-1「Development of Prediction Method of the Stability of Organic Thin-film Solar Cell and Solar Cell with High Stability」in the theme of 「Fabrication of High Efficiency Organic Thin-film Solar Cell」) (FY2010-FY2011) FY2010 Annual Report
Improvement of stability of organic thin-film solar cell (OPV) is very important for the commercialization. In addition, to establish the acceleration test condition to predict the stability of OPV is also important because the test condition to check the stability such as JIS standard for silicon solar cell has already been established but the architecture of OPV is very different from silicon solar cell so the same test condition is difficult to apply to OPV. From the background, we are in charge of establishing the acceleration test condition for OPV and improving the stability of OPV in this project. Our target in this project is (1) to establish the acceleration test condition which shows good accordance with outdoor stability test (2) to analysis the degradation mechanism and obtain the strategy to improve stability (3) to propose the high stability OPV having more than 5 years stability by utilizing (1) and (2). For the purpose of (1), we started outdoor stability test and obtained the stability data for 2 months. We found that the stability data was similar to the consecutive irradiation test using solar simulator (1SUN) so it can be useful method to predict the outdoor stability. For the purpose of (2), we started to test various constitutional materials and observed the effect against stability. We tried TiOx as an anode buffer layer and found that it was useful to improve the heat stability at 85℃. From the dark current of I-V curve, we speculated that TiOx layer was useful to block the migration of electrode. In addition, we observed the degradation speed became very fast at the temperature over Tg of active layer, so it was found that Tg of active layer was also important factor for heat stability. Regarding the light stability, we observed that UV cut filter was useful to improve the stability so it was found that UV light was one of the reason of degradation. We changed the electrode material from Al to Ag, the stability against light was improved. It suggests that degradation of electrode is accelerated by light.
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