Lead halide perovskite nanocrystals (NCs) have recentlyemergedas cutting-edge semiconductor materials for the development of optoelectronicdevices. Exploitation of delayed hot carrier (HC) relaxation is aneffective way to increase the solar conversion efficiency further.Therefore, delaying the HC relaxation time is essential. Here, wehave reported a simple strategy to passivate the surface of CsPbX3 (X = Br/Cl) NCs with hexadecylamine (HDA) molecules, followedby exploitation of the femtosecond transient absorption spectroscopicinformation to determine the HC relaxation dynamics and ultrafastcarrier dynamics. Faster ultrafast carrier relaxation dynamics areobserved with the increasing Cl content in the CsPbX3 NCs(X = Br/Cl). Furthermore, we proposed slower ultrafast carrier relaxationdynamics along with longer HC relaxation time in the HDA-passivatedCsPbX(3) (X = Br/Cl) NCs compared to the pristine NCs. Thesubstantial increase in the initial HC temperature and a prolongedHC decay time additionally reveal the effective delay in HC coolingdynamics after the passivation of the NCs with HDA molecules. A thoroughunderstanding of the charge-carrier relaxation dynamics in CsPbX3 (X = Br/Cl) NCs will provide a way to design efficient optoelectronicdevices.
机构:
Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wei, Qi
Yin, Jun
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King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Yin, Jun
Bakr, Osman M.
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King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Bakr, Osman M.
Wang, Ze
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Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wang, Ze
Wang, Chenhao
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Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wang, Chenhao
Mohammed, Omar F.
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King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Mohammed, Omar F.
Li, Mingjie
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Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Li, Mingjie
Xing, Guichuan
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Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Wu, Yuting
Huang, Zhigao
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Huang, Zhigao
Sun, Qi
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Sun, Qi
Ta, Van Duong
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Le Quy Don Tech Univ, Dept Opt Devices, Hanoi 100000, VietnamNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Ta, Van Duong
Wang, Sensen
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Wang, Sensen
Wang, Yue
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
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Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wei, Qi
Yin, Jun
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h-index: 0
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King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Yin, Jun
Bakr, Osman M.
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h-index: 0
机构:
King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Bakr, Osman M.
Wang, Ze
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h-index: 0
机构:
Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wang, Ze
Wang, Chenhao
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h-index: 0
机构:
Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Wang, Chenhao
Mohammed, Omar F.
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h-index: 0
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King Abdullah Univ Sci & Technol KAUST, Div Phys Sci & Engn, Thuwal 239556900, Saudi ArabiaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Mohammed, Omar F.
Li, Mingjie
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h-index: 0
机构:
Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
Li, Mingjie
Xing, Guichuan
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h-index: 0
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Univ Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R ChinaUniv Macau, Inst Appl Phys & Mat Engn, Joint Key Lab, Minist Educ, Macau 999078, Peoples R China
机构:
Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Wu, Yuting
Huang, Zhigao
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Huang, Zhigao
Sun, Qi
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Sun, Qi
Ta, Van Duong
论文数: 0引用数: 0
h-index: 0
机构:
Le Quy Don Tech Univ, Dept Opt Devices, Hanoi 100000, VietnamNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Ta, Van Duong
Wang, Sensen
论文数: 0引用数: 0
h-index: 0
机构:
Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China
Wang, Sensen
Wang, Yue
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h-index: 0
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Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R ChinaNanjing Univ Sci & Technol, Coll Mat Sci & Engn, MIIT Key Lab Adv Display Mat & Devices, Nanjing 210094, Peoples R China