中文版 | English
Title

Carrier Dynamics of Efficient Triplet Harvesting in AgBiS2/Pentacene Singlet Fission Solar Cells

Author
Corresponding AuthorGuo, Liang; Halpert, Jonathan E. E.
Publication Years
2023-03-01
DOI
Source Title
EISSN
2198-3844
Abstract

Singlet fission is a process by which an organic semiconductor is able to generate two triplet excitons from a single photon. If charges from the triplets can be successfully harvested without heavy losses in energy, then this process can enable a single-junction solar cell to surpass the Shockley-Queisser limit. While singlet fission processes are commonly observed in several materials, harvesting the resulting triplets is difficult and has been demonstrated with only a few transport materials. Here, transient absorption spectroscopy is used to investigate singlet fission and carrier transfer processes at the AgBiS2/pentacene (AgBiS2/Pc) heterojunction. The successful transfer of triplets from pentacene to AgBiS2 and the transfer of holes from AgBiS2 to pentacene is observed. Further singlet fission in pentacene by modifying the crystallinity of the pentacene layer and have fabricated the first singlet fission AgBiS2/Pc solar cell is enhanced. Singlet fission devices exhibit higher external quantum efficiency compared with the control devices, and thus demonstrating the significant contribution of charges from the singlet fission process.

Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
SUSTech Authorship
Corresponding
Funding Project
National Key Research and Development Program of China[2020YFA0715000] ; Department of Chemistry[
WOS Research Area
Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS Subject
Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Accession No
WOS:000953597400001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/523936
DepartmentDepartment of Mechanical and Energy Engineering
Affiliation
1.Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Key Lab Energy Convers & Storage Technol, Minist Educ, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, SUSTech Energy Inst Carbon Neutral, Shenzhen 518055, Peoples R China
5.Hong Kong Univ Sci & Technol, Energy Inst, Kowloon, Clear Water Bay, Hong Kong 999077, Peoples R China
6.Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, State Key Lab Adv Displays & Optoelect Technol, Kowloon, Hong Kong 999077, Peoples R China
First Author AffilicationDepartment of Mechanical and Energy Engineering;  Southern University of Science and Technology
Corresponding Author AffilicationDepartment of Mechanical and Energy Engineering;  Southern University of Science and Technology
Recommended Citation
GB/T 7714
Geng, Pai,Chen, Dezhang,Shivarudraiah, Sunil B. B.,et al. Carrier Dynamics of Efficient Triplet Harvesting in AgBiS2/Pentacene Singlet Fission Solar Cells[J]. ADVANCED SCIENCE,2023.
APA
Geng, Pai,Chen, Dezhang,Shivarudraiah, Sunil B. B.,Chen, Xihan,Guo, Liang,&Halpert, Jonathan E. E..(2023).Carrier Dynamics of Efficient Triplet Harvesting in AgBiS2/Pentacene Singlet Fission Solar Cells.ADVANCED SCIENCE.
MLA
Geng, Pai,et al."Carrier Dynamics of Efficient Triplet Harvesting in AgBiS2/Pentacene Singlet Fission Solar Cells".ADVANCED SCIENCE (2023).
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