Details

Autor(en) / Beteiligte

• Tran, Ba-Duc
• Tran, Phuong-Nam
• Bui, Xuan-Thanh
• Nguyen, Duy-Hung
• Duong, Thanh-Tung

Titel

Fabrication of CsPb1−xMnxBr3−2xCl2x (x = 0–0.5) quantum dots for near UV photodetector application

Ist Teil von

• Green processing and synthesis, 2022-01, Vol.11 (1), p.536-544

Ort / Verlag

Berlin: De Gruyter

Erscheinungsjahr

2022

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• In this study, CsPb Mn Br Cl ( = 0–0.5) nanoparticles were synthesized directly in toluene solvents at high temperature. This approach results in small-size nanoparticles, which can be used in photoelectric components without adding a filtration process to eliminate high-temperature solvents such as octadecene. The high content Mn -incorporated CsPb(Cl/Br) host is observed by strongly wideband emission at 592 nm of manganese d-states spin and orbital forbidden transition. After infiltration into mesoporous TiO , the Mn ion receives energy from the CsPb(Cl/Br) host (irradiated 405 nm light-emitting diode source) and effectively transfers to the TiO scaffold layer. As a result, a metal/semiconductor/metal planar structure photodetector with m-TiO /CsPb Mn Br Cl ( = 0–0.5) composite showed several figures of merit compared to bare m-TiO and m-TiO /CsPbBr such as on/off ratio of 10 times, responsivity of 1.67 A·W , and detectivity of 4.42 × 10 Jones. The key factors contributing to the growth of the on/off ratio include the decreasing dark current and enhancing exciton energy and transportation due to the infiltration of CsPb Mn Br Cl ( = 0–0.5) perovskite quantum dots into mesopores of the m-TiO scaffold layer.