基于方酸菁的溶液处理倒置体异质结太阳能电池，在空气中制备。

Squaraine based solution processed inverted bulk heterojunction solar cells processed in air.

作者信息

Varma P C Reshmi, Namboothiry Manoj A G

机构信息

School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, CET Campus, Engineering College P O, Thiruvananthapuram, Kerala PIN 695016, India.

出版信息

Phys Chem Chem Phys. 2016 Feb 7;18(5):3438-43. doi: 10.1039/c5cp05080d.

DOI:10.1039/c5cp05080d

PMID:26426261

Abstract

Inverted bulk heterojunction solar cells based on low temperature solution processed squaraine (SQ) and [6,6]-phenyl C71 butyric acid methyl-ester (PC71BM) with varying blend ratios were made in air. An optimized bulk heterojunction device of SQ and PC71BM (with a blend ratio of 1 : 6) showed a power conversion efficiency (PCE) of 2.45% with an incident photon to current conversion efficiency of 65% at 680 nm and a spectral window extending to the NIR region. The devices also showed an enhanced PCE value of 4.12% upon continuous illumination from an AM1.5G light source of intensity 1 Sun. The intensity dependent photocurrent studies showed a monomolecular recombination mechanism in the photovoltaic device performance. The device stored in air showed reasonable stability for a period of one month.

摘要

基于低温溶液法制备的、具有不同混合比例的方酸菁（SQ）和[6,6]-苯基-C71-丁酸甲酯（PC71BM）的倒置体异质结太阳能电池是在空气中制备的。优化后的SQ和PC71BM体异质结器件（混合比例为1:6）在680nm处的功率转换效率（PCE）为2.45%，入射光子到电流的转换效率为65%，光谱窗口延伸至近红外区域。在强度为1个太阳的AM1.5G光源持续照射下，这些器件的PCE值还提高到了4.12%。光电流与强度相关的研究表明，光伏器件性能中存在单分子复合机制。储存在空气中的器件在一个月的时间内表现出了合理的稳定性。