期刊
SUSTAINABLE ENERGY & FUELS
卷 2, 期 5, 页码 1027-1034出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7se00603a
关键词
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资金
- Deutsche Forschungsgemeinschaft [KI-1571/2-1, RA-473/7-1]
- Bavarian Ministry for Economics, Media, Energy and Technology via the project Perowskit basierte Tandem-Solarzellen
Transient photoluminescence measurements of lead-halide perovskite layers with electron or hole transport layers provide insights into the interfacial charge transfer and recombination processes. However, analytically describing these measurements over a wide range of timescales is complicated by the combination of different physical effects such as transport within the perovskite, transfer to the transport layer, accumulation of charges and recombination at the interface. Therefore, numerical driftdiffusion simulations of photoluminescence transients as a function of laser fluence and interface properties are used to obtain a quantitative understanding of experimental results. Comparison between experiment and simulation combined with an analysis of the uniqueness of the result yields an interfacerecombination velocity that has to be around 200 cm s 1 for the perovskite-PC61BM interface in order to be consistent with data obtained at several laser fluences.
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