Investigation of post-thermal annealing-induced enhancement in photovoltaic performance for squaraine-based organic solar cells

doi:10.1007/s11706-020-0490-z

Frontiers of Materials Science

2020, Vol. 14

Issue (1): 81-88 https://doi.org/10.1007/s11706-020-0490-z

本期目录

Investigation of post-thermal annealing-induced enhancement in photovoltaic performance for squaraine-based organic solar cells

Rui ZHU², Feiyang LIU¹, Zixing WANG¹, Bin WEI¹, Guo CHEN¹(

)

¹. Key Laboratory of Advanced Display and System Applications (Ministry of Education), Shanghai University, Yanchang Road 149, Shanghai 200072, China
². School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China

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Abstract：

In this work, we have systematically investigated the post-thermal annealing-induced enhancement in photovoltaic performance of a 2,4-bis[4-(N, N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (DIBSQ)/C₆₀ planar heterojunction (PHJ) organic solar cells (OSCs). An increased power conversion efficiency (PCE) of 3.28% has been realized from a DIBSQ/C₆₀ device with thermal annealing at 100 °C for 4 min, which is about 33% enhancement compared with that of the as-cast device. The improvement of the device performance may be mainly ascribed to the crystallinity of the DIBSQ film with post-thermal annealing, which will change the DIBSQ donor and C₆₀ acceptor interface from PHJ to hybrid planar-mixed heterojunction. This new donor–acceptor heterojunction structure will significantly improve the charge separation and charge collection efficiency, as well as the open circuit voltage (V_oc) of the device, leading to an enhanced PCE. This work provides an effective strategy to improve the photovoltaic performance of SQ-based OSCs.

Key words： organic solar cell squaraine dye post-thermal annealing donor/acceptor interface power conversion efficiency

收稿日期: 2019-10-23 出版日期: 2020-03-05

Corresponding Author(s): Guo CHEN

引用本文:

. [J]. Frontiers of Materials Science, 2020, 14(1): 81-88.
Rui ZHU, Feiyang LIU, Zixing WANG, Bin WEI, Guo CHEN. Investigation of post-thermal annealing-induced enhancement in photovoltaic performance for squaraine-based organic solar cells. Front. Mater. Sci., 2020, 14(1): 81-88.

链接本文:

https://academic.hep.com.cn/foms/CN/10.1007/s11706-020-0490-z
https://academic.hep.com.cn/foms/CN/Y2020/V14/I1/81

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