Efficient Gate-Tunable Hot-Carrier Photocurrent from Perovskite Multiple Quantum Wells

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 12. Dez., Seite e2413839
1. Verfasser: Wang, Chenhao (VerfasserIn)
Weitere Verfasser: Wei, Qi, Ren, Hui, Wong, Kin Long, Liu, Qi, Zhou, Luwei, Wang, Pengzhi, Cai, Songhua, Yin, Jun, Li, Mingjie
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 2D heterostructure MoS2 hot carrier extraction hot carrier photocurrent perovskite multiple Quantum wells
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520 |a Hot-carrier relaxation above the bandgap results in significant energy losses, making the extraction of hot carriers a critical challenge for efficient hot-carrier photocurrent generation in devices. In this study, we observe long-lived hot carriers in the metal-halide perovskite multiple quantum wells, (BA)2(MA)n-1PbnI3n+1 (n = 3), and demonstrate effective hot-hole photocurrent generation using 2D MoS₂ as an extraction layer. A high external quantum efficiency of short-circuit hot-carrier photocurrent of up to 35.4% is achieved. Further enhancement in photocurrent efficiency and open-circuit photovoltage is achieved when a gate electric field is applied, resulting in an external quantum efficiency of up to 61.9%. Evidence of hot-hole extraction is validated through operando transient reflection measurements on the working devices, with studies that depend on wavelength, carrier density, and gate voltage. DFT calculations on the heterostructure devices under different bias voltages further elucidate the mechanism of hot-hole extraction enhancement. These findings underscore the potential of perovskite multiple quantum wells as long-lived hot-carrier generators and highlight the role of 2D transition metal dichalcogenide semiconductors as efficient hot-carrier extraction electrodes for low-power optoelectronics 
650 4 |a Journal Article 
650 4 |a 2D heterostructure 
650 4 |a MoS2 
650 4 |a hot carrier extraction 
650 4 |a hot carrier photocurrent 
650 4 |a perovskite multiple Quantum wells 
700 1 |a Wei, Qi  |e verfasserin  |4 aut 
700 1 |a Ren, Hui  |e verfasserin  |4 aut 
700 1 |a Wong, Kin Long  |e verfasserin  |4 aut 
700 1 |a Liu, Qi  |e verfasserin  |4 aut 
700 1 |a Zhou, Luwei  |e verfasserin  |4 aut 
700 1 |a Wang, Pengzhi  |e verfasserin  |4 aut 
700 1 |a Cai, Songhua  |e verfasserin  |4 aut 
700 1 |a Yin, Jun  |e verfasserin  |4 aut 
700 1 |a Li, Mingjie  |e verfasserin  |4 aut 
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773 1 8 |g year:2024  |g day:12  |g month:12  |g pages:e2413839 
856 4 0 |u http://dx.doi.org/10.1002/adma.202413839  |3 Volltext 
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