Influence of P3HT molecular weight on film processing and solar cell performance

Junle Yu, Jie Tang, Chao Wang, Yanqiong Zheng, Chihaya Adachi, Chenghui Zeng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Here, the influence of molecular weight (Mw) of P3HT on film morphology, film processing, and BHJ performance were investigated. The film morphology of Mw=10000 P3HT film is asperous, which corresponds to the relatively low device performance. The donor ratio of BHJ based on P3HT Mw=700000 at 10:7 (donor:acceptor) achieves the best photovoltaic performance. And the BHJs with various P3HT Mw (from 10000 to 700000) demonstrates that P3HT Mw=50000 achieves the highest power conversion efficiency probably due to the appropriate chain length thus good film morphology and donor-acceptor interface contact. Although large Mw P3HT has strong light absorption, however, the ropy solution limits the film fabrication. Therefore, relatively large but not too large Mw for donor polymer is suitable for polymer solar cells. The results show that the Mw of P3HT plays no large role in the device stability.

Original languageEnglish
Title of host publicationProceedings - 2018 19th International Conference on Electronic Packaging Technology, ICEPT 2018
EditorsFei Xiao, Jun Wang, Lin Chen, Tianchun Ye
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1602-1604
Number of pages3
ISBN (Electronic)9781538663868
DOIs
Publication statusPublished - Oct 2 2018
Event19th International Conference on Electronic Packaging Technology, ICEPT 2018 - Shanghai, China
Duration: Aug 8 2018Aug 11 2018

Publication series

NameProceedings - 2018 19th International Conference on Electronic Packaging Technology, ICEPT 2018

Other

Other19th International Conference on Electronic Packaging Technology, ICEPT 2018
Country/TerritoryChina
CityShanghai
Period8/8/188/11/18

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Polymers and Plastics

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