Solution-Processed Mixed-Dimensional Hybrid Perovskite/Carbon Nanotube Electronics.
basic_science · Level V
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- Record sourced from PubMed, PMID 32119769.
- Also identified by DOI 10.1021/acsnano.9b07888.
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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 (MA<sub>1-<i>x</i></sub>FA<sub><i>x</i></sub>)Pb(I<sub>1-<i>x</i></sub>Br<sub><i>x</i></sub>)<sub>3</sub>, enabling mixed-dimensional solution-processed electronics with high mobility (32.25 cm<sup>2</sup>/(V s)) and low voltage (∼3 V) operation. The resulting mixed-dimensional PVK/SWCNT TFTs possess ON/OFF ratios on the order of 10<sup>7</sup>, enabling the fabrication of high-gain inverters.