Facile Fabrication of Mixed–Cation FA<sub>1−<i>X</i></sub>Cs<i><sub>X</sub></i>PbI<sub>3</sub> Perovskites Thin Films for Photodetector Applications
oleh: Fenyun Wang, Pachaiyappan Murugan, Shunhong Dong, Xiaolu Zheng, Jiaxiu Man, Zhiyong Liu, Weibin Zhang, Ting Zhu, Hong-En Wang
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2023-03-01 |
Deskripsi
Formamidinium lead triiodide (FAPbI<sub>3</sub>) perovskite has received great attention because of its distinct optoelectronic property, smaller band gap (~1.5 eV), and higher thermal stability than methylammonium lead triiodide (MAPbI<sub>3</sub>). However, the efficient synthesis of such perovskite materials on a large scale at a low cost remains a challenge. In this work, mixed-cation FA<sub>1<i>−x</i></sub>Cs<i><sub>x</sub></i>PbI<sub>3</sub> thin films were directly prepared in an atmospheric environment with a high film formation rate, low material loss, low cost, and low requirements for experimental instruments and environment. The as-obtained FAPbI<sub>3</sub> films exhibited excellent optoelectronic properties, showing promising applications in the photodetection field.