期刊
SOLAR RRL
卷 6, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202200049
关键词
perovskites; photoluminescence; solar cells
资金
- Regione through ISIS@MACH [G10795]
- European Union [SGA 881603, 764047]
- Italian Ministry of Economic Development
- Swiss National Science Foundation [200020_185041]
- ESPResSo project [764047]
- Consiglio Nazionale delle Ricerche within the CRUI-CARE Agreement
- Swiss National Science Foundation (SNF) [200020_185041] Funding Source: Swiss National Science Foundation (SNF)
A systematic approach is presented for comparing the conversion efficiency and photoluminescence intensity of perovskite solar cells, and applied to multiple heterogeneous devices. The quenching of photoluminescence in short-circuit conditions is shown to be a good parameter for assessing device efficiency.
The photoluminescence (PL) intensity is often used as an indicator of the performance of perovskite solar cells and indeed the PL technique is often used for the characterization of these devices and their constituent materials. Herein, a systematic approach is presented to the comparison of the conversion efficiency and the PL intensity of a cell in both open-circuit (OC) and short-circuit (SC) conditions and its application to multiple heterogeneous devices. It is shown that the quenching of the PL observed in SC conditions is a good parameter to assess the device efficiency. The authors explain the dependence of the PL quenching ratio between OC and SC on the cell efficiency with a simple model that is also able to estimate the carrier extraction time of a device.
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