期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 119, 期 14, 页码 7631-7636出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b01314
关键词
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资金
- Grants-in-Aid for Scientific Research [15K14149, 25790040] Funding Source: KAKEN
The quenching of singlet excitons by injected charge carriers in molecules that display thermally activated delayed fluorescence (TADF) was investigated using time-resolved transient photoluminescence (PL) techniques. Injected electrons did not affect the excitons; however, injected holes caused significant quenching. Using a rate-equation analysis, the hole-induced exciton quenching rate was determined to be between 10(-11) and 10(-12) cm(3) s(-1). Interestingly, the TADF emission component was enhanced in the presence of injected holes, plausibly due to a reduction of the singlet-exciton energy level.
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