Citation: Shao Lin, Tong Fei, Zhu Mengbing, Xia Hao, Peng Wenhong, Tan Hua, Zhang Bin, Liu Yu, Zhu Weiguo. A novel A_H-D-A-type phase junction material to improve photovoltaic performance and device stability in fullerene OSCs[J]. Chinese Chemical Letters, ;2020, 31(9): 2452-2458. doi: 10.1016/j.cclet.2020.03.036 shu

A novel A_H-D-A-type phase junction material to improve photovoltaic performance and device stability in fullerene OSCs

Shao Lin ^a,b ,
Tong Fei ^b ,
Zhu Mengbing ^b ,
Xia Hao ^b ,
Peng Wenhong ^b ,
Tan Hua ^b,**, ,
Zhang Bin ^b ,
Liu Yu ^b,**, ,
Zhu Weiguo ^a,b,*,

a.
College of Chemistry, Xiangtan University, Xiangtan 411105, China
b.
School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China

^**

tanhua815@126.com

liuyu03b@126.com

zhuwg18@126.com

Received Date: 29 October 2019
Revised Date: 3 March 2020
Accepted Date: 11 March 2020
Available Online: 18 March 2020

Figures(7)

In order to boost power conversion efficiency (PCE) and operation stability of organic solar cells (OSCs), we propose a new idea of phase junction materials (PJMs) used as a photoactive layer component to improve device performance and stability. For this purpose, a novel PJM of H-TRC8 based on rhodanine unit was designed with a conjugated A_H-D-A framework. Here, A_H is a hydrogen-donating electron acceptor unit, D-A is an electron donor-acceptor unit. It is found that H-TRC8 has a good carriertransporting ability, as well as definite hydrogen-bond and D-A interaction with donor/acceptor materials. While H-TRC8 is added into the PBDB-T/PC₆₀BM blend film with 1.0 vol% DIO (1, 8-diiodooctane), the resulting blend film exhibited an enhanced absorption and improved morphology. The intermolecular hydrogen bond between H-TRC8 and PBDB-T plays an important role for them, which is confirmed via FT-IR spectra and 2D ¹H NMR. As a result, the PBDB-T/PC₆₀BM-based devices with 1.25 wt% H-TRC8 and 1.0 vol% DIO exhibit a significantly improved PCE of 8.06%, which is increased by 20.6% in comparison to that in the binary devices with 1.0 vol% DIO only (PCE = 6.68%). Furthermore, the device stability is significantly enhanced with only 43% PCE roll-off at 150 ℃ for 120 h. This work indicates that A_H-D-A-type PJMs are promising photovoltaic materials used as photoactive-layer components to achieve high-performance fullerene OSCs with high device stability.
- Phase junction material,
- A_H-D-A,
- H-bond,
- H-TRC8,
- Performance and stability
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

A novel AH-D-A-type phase junction material to improve photovoltaic performance and device stability in fullerene OSCs

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通讯作者: 陈斌, bchen63@163.com

A novel A_H-D-A-type phase junction material to improve photovoltaic performance and device stability in fullerene OSCs