TY - JOUR
T1 - There is plenty of room at the top: generation of hot charge carriers and their applications in perovskite and other semiconductor-based optoelectronic devices.
AU - Ahmed, Irfan
AU - Shi, Lei
AU - Pasanen, Hannu
AU - Vivo, Paola
AU - Maity, Partha
AU - Hatamvand, Mohammad
AU - Zhan, Yiqiang
N1 - KAUST Repository Item: Exported on 2021-09-07
Acknowledgements: This work was financially supported by the Shanghai Science and Technology Innovation Action Plan, Belt & Road Young Scientist Program (Grant No. 19160745500). P.V. and H.P. thank Jane & Aatos Erkko Foundation (project “ASPIRE”) for funding. This work is part of the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), Decision No. 320165.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - Hot charge carriers (HC) are photoexcited electrons and holes that exist in nonequilibrium high-energy states of photoactive materials. Prolonged cooling time and rapid extraction are the current challenges for the development of future innovative HC-based optoelectronic devices, such as HC solar cells (HCSCs), hot energy transistors (HETs), HC photocatalytic reactors, and lasing devices. Based on a thorough analysis of the basic mechanisms of HC generation, thermalization, and cooling dynamics, this review outlines the various possible strategies to delay the HC cooling as well as to speed up their extraction. Various materials with slow cooling behavior, including perovskites and other semiconductors, are thoroughly presented. In addition, the opportunities for the generation of plasmon-induced HC through surface plasmon resonance and their technological applications in hybrid nanostructures are discussed in detail. By judiciously designing the plasmonic nanostructures, the light coupling into the photoactive layer and its optical absorption can be greatly enhanced as well as the successful conversion of incident photons to HC with tunable energies can also be realized. Finally, the future outlook of HC in optoelectronics is highlighted which will provide great insight to the research community.
AB - Hot charge carriers (HC) are photoexcited electrons and holes that exist in nonequilibrium high-energy states of photoactive materials. Prolonged cooling time and rapid extraction are the current challenges for the development of future innovative HC-based optoelectronic devices, such as HC solar cells (HCSCs), hot energy transistors (HETs), HC photocatalytic reactors, and lasing devices. Based on a thorough analysis of the basic mechanisms of HC generation, thermalization, and cooling dynamics, this review outlines the various possible strategies to delay the HC cooling as well as to speed up their extraction. Various materials with slow cooling behavior, including perovskites and other semiconductors, are thoroughly presented. In addition, the opportunities for the generation of plasmon-induced HC through surface plasmon resonance and their technological applications in hybrid nanostructures are discussed in detail. By judiciously designing the plasmonic nanostructures, the light coupling into the photoactive layer and its optical absorption can be greatly enhanced as well as the successful conversion of incident photons to HC with tunable energies can also be realized. Finally, the future outlook of HC in optoelectronics is highlighted which will provide great insight to the research community.
UR - http://hdl.handle.net/10754/670956
UR - https://www.nature.com/articles/s41377-021-00609-3
U2 - 10.1038/s41377-021-00609-3
DO - 10.1038/s41377-021-00609-3
M3 - Article
C2 - 34465725
SN - 2095-5545
VL - 10
JO - Light, science & applications
JF - Light, science & applications
IS - 1
ER -