Excitation Wavelength Dependent Interfacial Charge Transfer Dynamics in a CH3NH3PbI3 Perovskite Film

Excitation Wavelength Dependent Interfacial Charge Transfer Dynamics in a CH3NH3PbI3 Perovskite Film

Elucidation of interfacial charge separation and recombination mechanisms is crucial to improve performance of organic-inorganic metal halide perovskite solar cells. Here, we have investigated influence of initially populated electron and hole potential levels in a perovskite conduction band (CB) an...

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Veröffentlicht in:Journal of Photopolymer Science and Technology 2018/06/25, Vol.31(5), pp.633-642
Hauptverfasser: Liu, Maning, Endo, Masaru, Shimazaki, Ai, Wakamiya, Atsushi, Tachibana, Yasuhiro
Format: Artikel
Sprache:eng
Schlagworte:
CH3NH3PbI3 perovskite film
Charge transfer
Conduction bands
Electron injection
Electron transport
Excitation
Excitation wavelength dependence
Hole injection
Interfacial charge recombination
Metal halides
Performance enhancement
Perovskites
Photovoltaic cells
Reaction kinetics
Response time
Separation
Solar cells
Titanium dioxide
Valence band
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Zusammenfassung:Elucidation of interfacial charge separation and recombination mechanisms is crucial to improve performance of organic-inorganic metal halide perovskite solar cells. Here, we have investigated influence of initially populated electron and hole potential levels in a perovskite conduction band (CB) and valence band (VB), respectively, by altering an excitation wavelength on interfacial charge separation and recombination dynamics in a CH3NH3PbI3 perovskite film sandwiched by a mesoporous TiO2 structure as an electron transport material (ETM) and a spiro-OMeTAD film as a hole transport material (HTM). Multi-phasic electron injection reactions are observed over
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.31.633