Moreover, functional groups in 2-CF3-PEAI can deactivate a variety of traps in perovskite by multiple interactions, i.e. coordination between I- and Pb2+, hydrogen bond between CF3 and formamidine, ionic interaction between NH3+ group and lead halide anion etc. Thus, non-radiative ...
作为钙钛矿中的深能级陷阱,金属铅(Pb0)极大地降低了钙钛矿光电子器件(如钙钛矿太阳能电池)的性能。清华大学Chenyi Yi等人设计了 2-三氟甲基-苯乙胺氢碘化物 (2-CF3-PEAI) 作为多功能陷阱钝化剂,它可以与金属铅反应以消除深能级Pb0陷阱,形成二维钙钛矿 (2-CF3-PEA)2PbI4位于3D钙钛矿之上,不会阻碍电荷载流子传输。