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Evidence of hot carrier extraction in metal halide perovskite solar cells

Journal Article · · Progress in Photovoltaics
DOI:https://doi.org/10.1002/pip.3777· OSTI ID:2375844
The presence of hot carriers is presented in the operational properties of an (FA,Cs)Pb(I, Br, Cl)3 solar cell at ambient temperatures and under practical solar concentration. Albeit, in a device architecture that is not suitably designed as a functional hot carrier solar cell. At 100 K, clear evidence of hot carriers is observed in both the high energy tail of the photoluminescence spectra and from the appearance of a nonequilibrium photocurrent at higher fluence in light J–V measurements. At room temperature, however, the presence of hot carriers in the emission at elevated laser fluence is shown to compete with a gradual red shift in the PL peak energy as photoinduced halide segregation begins to occur at higher lattice temperature. The effects of thermionic emission of hot carriers and the presence of a nonequilibrium carrier distribution are also shown to be distinct from simple lattice heating. In conclusion, this results in large unsaturated photocurrents at high powers as the Fermi distribution exceeds that of the heterointerface controlling carrier transport and rectification.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
Grant/Contract Number:
AC36-08GO28308; SC0019384; SC0021158
OSTI ID:
2375844
Alternate ID(s):
OSTI ID: 2310996
Report Number(s):
NREL/JA--5900-84596; MainId:85369; UUID:366af456-9bab-453e-8950-23a45882c383; MainAdminId:72875
Journal Information:
Progress in Photovoltaics, Journal Name: Progress in Photovoltaics Journal Issue: 8 Vol. 32; ISSN 1062-7995
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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