Nonfullerene Polymer Solar Cell with Large Active Area of 216 cm2 and High Power Conversion Efficiency of 7.7%

Kuan Min Huang, Chih Ming Lin, Szu Han Chen, Cheng Sian Li, Chen Hsuan Hu, Yu Zhang, Hsin Fei Meng, Chih Yu Chang, Yu Chiang Chao, Hsiao Wen Zan, Lijun Huo, Peichen Yu

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


A polymer solar cell involving a nonfullerene acceptor is made by blade coating. In the ternary bulk-heterojunction layer, the donor is poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b’]dithiophene))-co-(1,3-di(5-thiophene-2-yl)- 5,7-bis(2-ethylhexyl)benzo[1,2-c:4,5-c’]dithiophene-4,8-dione)] (PBDB-T) and the acceptor is a mixture of 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2’,3’-d’]-s-indaceno[1,2-b:5,6-b’]dithiophene) (ITIC) and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM). The device structure is an indium tin oxide (ITO)-coated glass substrate/PEDOT:PSS/ternary active layer/interfacial layer/Al. For a small active area of 0.04 cm2, the best power conversion efficiency is 9.8% with the LiF interfacial layer. For a large active area of 216 cm2, the best efficiency is 7.7% with the ZrOx interfacial layer. After annealing at 85 °C for 30 days, the large-area device keeps 75% of the initial efficiency. The efficiency of 4.9% is achieved for a large-area semi-transparent device.

Original languageEnglish
Article number1900071
JournalSolar RRL
Issue number8
Publication statusPublished - 2019 Aug 1


  • large-area
  • nonfullerene
  • polymer solar cells
  • solution-processable interfacial layer
  • stability

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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