2015年 第76回応用物理学会秋季学術講演会

講演情報

一般セッション(口頭講演)

13 半導体 » 13.10 化合物太陽電池

[14a-2M-1~11] 13.10 化合物太陽電池

2015年9月14日(月) 09:00 〜 12:15 2M (224-1(南側))

座長:八木 修平(埼玉大)

09:30 〜 09:45

[14a-2M-2] Correlation between Capping Ligands and Photovoltaic Properties in PbS Quantum Dot Solar Cells

〇(P)Jin Chang1,4, Yuki Kuga1, Taro Toyoda1,4, Yuhei Ogomi2,4, Shuzi Hayase2,4, Kenji Katayama3, Qing Shen1,4 (1.Univ. Electro-Commun., 2.Kyushu Inst. Tech., 3.Chuo Univ., 4.CREST JST)

キーワード:quantum dots,surface chemistry,solar cells

Colloidal quantum dots (QDs) are generally capped with long-chain, electrically insulating ligands which are introduced during the synthetic procedures. Replacement of these molecules with shorter chain ligands has been shown necessary to decrease the inter-dot spacing and improve the electron transfer in QD thin films. This work investigate the impact of the ligand chain length and scaffold on the photovoltaic properties and carrier dynamics in PbS quantum dot solar cells (QDSCs) by ultrafast transient absorption (TA) spectroscopy, temperature-dependent photoluminescence (PL) and transient photovoltage decay measurements.