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Exploring alkylthiol additives in PBDB-T:ITIC blended active layers for solar cell applications.
- Source :
-
Chinese Physics B . Aug2019, Vol. 28 Issue 8, p1-1. 1p. - Publication Year :
- 2019
-
Abstract
- Bulk heterojunction, non-fullerene PBDB-T:ITIC blend polymer solar cells have been fabricated. The active layers consisting of PBDB-T as a donor and ITIC as an acceptor are optimized using a series of alkylthiol additives (1,3-propanedithiol, 1,4-butanedithiol, and 1,8-octanedithiol). It is found that the donor and acceptor are phase separated with different crystalline domains. The additives effectively re-organize the morphology and extend the molecule ordering in lamellar structure with increased correlation length in ITIC domain, benefiting the generation and dissociation of exciton and reducing charge recombination. A substantial improvement in power conversion efficiency of the devices from 8.13% to 9.44% is observed. This study shows that the application of alkylthiol additives is a simple and effective approach to improve the device performance in solar cells based on polymer/non-fullerene blend system. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOLAR cells
*SILICON solar cells
*POLYMER blends
*HETEROJUNCTIONS
Subjects
Details
- Language :
- English
- ISSN :
- 16741056
- Volume :
- 28
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Chinese Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 138037031
- Full Text :
- https://doi.org/10.1088/1674-1056/28/8/088802