Solution-Processed Mixed-Dimensional Hybrid Perovskite/Carbon Nanotube Electronics
Chun Ma, Sarah C. Clark, Zhixiong Liu, Liangliang Liang, Yuliar Firdaus, Ran Tao, Ali Han, Xiaogang Liu, Lain‐Jong Li, Thomas D. Anthopoulos, Mark C. Hersam, Tom Wu
Abstract
Benefiting from their extraordinary physical properties, methylammonium lead halide perovskites (PVKs) have attracted significant attention in optoelectronics. However, the PVK-based devices suffer from low carrier mobility and high operation voltage. Here, we utilize sorted semiconducting single-walled carbon nanotubes (95% s-SWCNTs) to enhance the performance of thin-film transistors (TFTs) based on the mixed-cation perovskite (MA1–xFAx)Pb(I1–xBrx)3, enabling mixed-dimensional solution-processed electronics with high mobility (32.25 cm2/(V s)) and low voltage (∼3 V) operation. The resulting mixed-dimensional PVK/SWCNT TFTs possess ON/OFF ratios on the order of 107, enabling the fabrication of high-gain inverters.