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Title: Singlet fission efficiency in tetracene-based organic solar cells

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4876600· OSTI ID:1384675
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  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Energy Frontier Research Center (EFRC)

Singlet exciton fission splits one singlet exciton into two triplet excitons. Using a joint analysis of photocurrent and fluorescence modulation under a magnetic field, we determine that the triplet yield within optimized tetracene organic photovoltaic devices is 153%±5% for a tetracene film thickness of 20 nm. The corresponding internal quantum efficiency is 127%±18%. These results are used to prove the effectiveness of a simplified triplet yield measurement that relies only on the magnetic field modulation of fluorescence. Despite its relatively slow rate of singlet fission, the measured triplet yields confirm that tetracene is presently the best candidate for use with silicon solar cells.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Excitonics (CE)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001088
OSTI ID:
1384675
Journal Information:
Applied Physics Letters, Vol. 104, Issue 19; Related Information: CE partners with Massachusetts Institute of Technology (lead); Brookhaven National Laboratory; Harvard University; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 61 works
Citation information provided by
Web of Science

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Cited By (10)

Enhanced Delayed Fluorescence in Tetracene Crystals by Strong Light‐Matter Coupling journal July 2019
Triplet Harvesting from Intramolecular Singlet Fission in Polytetracene journal September 2017
Sub-Picosecond Singlet Exciton Fission in Cyano-Substituted Diaryltetracenes journal June 2015
A Four-Step Synthesis of Substituted 5,11-Dicyano-6,12-diaryltetracenes with Enhanced Stability and High Fluorescence Emission journal November 2017
Energy harvesting of non-emissive triplet excitons in tetracene by emissive PbS nanocrystals journal October 2014
Sensitization of silicon by singlet exciton fission in tetracene journal July 2019
Tuning the singlet fission relevant energetic levels of quinoidal bithiophene compounds by means of backbone modifications and functional group introduction journal January 2018
Molecular structure of the substrate-induced thin-film phase of tetracene journal October 2018
Sub-Picosecond Singlet Exciton Fission in Cyano-Substituted Diaryltetracenes journal June 2015
Enhanced Delayed Fluorescence in Tetracene Crystals by Strong Light-Matter Coupling text January 2019

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