TY - UNPB
T1 - Efficient extraction of hot carriers in perovskite quantum sot through building state coupled complex
AU - Li, Yusheng
AU - Jiang, Junke
AU - Wang, Dandan
AU - Liu, Dong
AU - Yajima, Shota
AU - Li, Hua
AU - Fuchimoto, Akihito
AU - Li, Hongshi
AU - Shi, Guozheng
AU - Hayase, Shuzi
AU - Tao, Shuxia
AU - Shi, Jiangjian
AU - Meng, Qingbo
AU - Ding, Chao
AU - Shen, Qing
PY - 2022/9/6
Y1 - 2022/9/6
N2 - Utilizing hot carriers is the crucial approach for solar cell to exceed the thermodynamic detailed balance limit, yet effective extraction of hot carriers in absorber materials via most commonly used semiconductor acceptors has been a challenge in both materials and photophysics research for many years. Herein, we build series of CsPbI3 quantum dot and fullerene derivative systems to explore the decisive factors of this process and have for the first time realized efficient hot carrier extraction in these systems (maximum extraction efficiency ~ 84%). We find building the systems as state-coupled complexes creates new carrier transport channels at about 0.22 eV above CsPbI3 quantum dot bandgap, which facilitates highly efficient HC extraction. Our research directly visualizes the inner connection of molecule interaction and ultrafast hot carrier extraction. The knowledge and strategy gained here are of universal meaning, taking an important step forward true hot carrier photovoltaics.
AB - Utilizing hot carriers is the crucial approach for solar cell to exceed the thermodynamic detailed balance limit, yet effective extraction of hot carriers in absorber materials via most commonly used semiconductor acceptors has been a challenge in both materials and photophysics research for many years. Herein, we build series of CsPbI3 quantum dot and fullerene derivative systems to explore the decisive factors of this process and have for the first time realized efficient hot carrier extraction in these systems (maximum extraction efficiency ~ 84%). We find building the systems as state-coupled complexes creates new carrier transport channels at about 0.22 eV above CsPbI3 quantum dot bandgap, which facilitates highly efficient HC extraction. Our research directly visualizes the inner connection of molecule interaction and ultrafast hot carrier extraction. The knowledge and strategy gained here are of universal meaning, taking an important step forward true hot carrier photovoltaics.
U2 - 10.48550/arXiv.2209.02202
DO - 10.48550/arXiv.2209.02202
M3 - Preprint
T3 - arXiv
BT - Efficient extraction of hot carriers in perovskite quantum sot through building state coupled complex
ER -