Chemo-thermal surface dedoping for high-performance tin perovskite solar cells

Effect of electronic doping and traps on carrier dynamics in tin halide perovskites

“…4 THPs have seen great improvements in terms of power conversion efficiency (PCE) and reproducibility since their launch in 2014, 5 achieving a current record PCE of 14.7%. 6 However, considering that the theoretical maximum efficiency with such a bandgap should exceed 30%, the ambitious target in terms of device performance is a long way from being fulfilled. One big challenge is that THPs are generally p-doped semiconductors with limited carrier diffusion lengths and short lifetimes, while the foremost studied LHPs are intrinsic.…”

Tin-based halide perovskite materials: properties and applications

“…This adduct guides the out-of-plane crystal orientation and promotes the homogeneous growth of polycrystalline perovskite films, increasing the electron diffusion length from 210 ± 20 nm to 290 ± 20 nm and achieving a certified efficiency of 14.6%. Moreover, very recently, Zhou et al 141 reported a new engineering concept, called chemo-thermal surface de-doping, to suppress the deleterious Sn( iv ) self-doping, addressing the major obstacle of tin-based PSCs, leading to champion efficiency of 14.8% (see Fig. 6e ).…”

“…(e) The J-V characteristics of tin-based PSCs with and without surface doping. 141 Copyright 2022, Wiley. (f) Power conversion efficiency record tracking of tin-perovskite solar cells.…”

Fullerene Derivative with Flexible Alkyl Chain for Efficient Tin-Based Perovskite Solar Cells

“…Tin-based halide perovskite materials have attracted much attention due to their low toxicity, suitable band gap, and their rapid improvement of the performance of photovoltaic devices [ 1 , 2 , 3 , 4 , 5 ]. Tin-based perovskite solar cells (TPSCs) show significant potential owing to their planar device structure, low-temperature solution fabrication process, and potential applications in flexible and tandem devices [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ].…”