In Situ Ligand Bonding Management of CsPbI3 Perovskite Quantum Dots Enables High‐Performance Photovoltaics and Red Light‐Emitting Diodes

• Published in: Angewandte Chemie International Edition Vol. 59; no. 49; pp. 22230 - 22237
• Main Authors: Shi, Junwei, Li, Fangchao, Jin, Yan, Liu, Cheng, Cohen‐Kleinstein, Ben, Yuan, Shuai, Li, Youyong, Wang, Zhao‐Kui, Yuan, Jianyu, Ma, Wanli
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.12.2020
• Edition: International ed. in English
• Subjects: Bonding; Cesium; CsPbI3; Free energy; Heat of formation; Iodides; Ligands; Optoelectronics; Perovskites; Phenylalanine; Photoluminescence; Photons; Photovoltaic cells; Photovoltaics; Quantum dots; Quantum efficiency; Solar cells; surface chemistry

To fine‐tune surface ligands towards high‐performance devices, we developed an in situ passivation process for all‐inorganic cesium lead iodide (CsPbI3) perovskite quantum dots (QDs) by using a bifunctional ligand, L‐phenylalanine (L‐PHE). Through the addition of this ligand into the precursor solut...