| Autor: |
Tran Ba-Duc, Tran Phuong-Nam, Bui Xuan-Thanh, Nguyen Duy-Hung, Duong Thanh-Tung |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Green Processing and Synthesis, Vol 11, Iss 1, Pp 536-544 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2191-9550 |
| DOI: |
10.1515/gps-2022-0047 |
| Popis: |
In this study, CsPb1–x MnxBr3–2x Cl2x (x = 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 Mn2+-incorporated CsPb(Cl/Br)3 host is observed by strongly wideband emission at 592 nm of manganese d-states spin and orbital forbidden transition. After infiltration into mesoporous TiO2, the Mn2+ ion receives energy from the CsPb(Cl/Br)3 host (irradiated 405 nm light-emitting diode source) and effectively transfers to the TiO2 scaffold layer. As a result, a metal/semiconductor/metal planar structure photodetector with m-TiO2/CsPb1–x MnxBr3–2x Cl2x (x = 0–0.5) composite showed several figures of merit compared to bare m-TiO2 and m-TiO2/CsPbBr3 such as on/off ratio of 104 times, responsivity of 1.67 A·W−1, and detectivity of 4.42 × 109 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 CsPb1–x MnxBr3–2x Cl2x (x = 0–0.5) perovskite quantum dots into mesopores of the m-TiO2 scaffold layer. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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