DBP and C70 based inverted tandem solar cells using a simple interconnecting layer

作者：Wang, Zhongqiang^*; Sano, Takeshi; Zhuang, Taojun; Sasabe, Hisahiro; Kido, Junji^*

来源：RSC Advances, 2017, 7(55): 34664-34668.

DOI：10.1039/c7ra04501h

• POLYMER
• EFFICIENT
• PHOTOVOLTAICS
• VOLTAGE
• SINGLE

Inverted tandemstructure cells with a simple interconnecting layer based on tetraphenyldibenzoperiflanthene (DBP) and fullerene-70 (C-70) were studied in this work. Two subcells using identical donor and acceptor materials were connected by a molybdenum trioxide and calcium (MoO3/Ca) interlayer in series. An outstanding fill factor (over 80%) under concentrated power intensity has been observed. Meanwhile, the open circuit voltage is approximately equal to the sum of the two subcells, revealing the excellent properties of MoO3/Ca as a recombination layer for tandem structured cells. On the other hand, the main loss mechanisms of charge carriers are analyzed; Schokley-Read-Hall and bimolecular recombination dominate the charge recombination in the tandem structured cells under low and high power intensities, respectively.

• 出版日期2017
• 单位太原理工大学