Efficient exciton to dopant energy transfer in Mn2+-Doped (C4H9NH3)2PbBr4 two-dimensional (2D) layered perovskites
| Title | Efficient exciton to dopant energy transfer in Mn2+-Doped (C4H9NH3)2PbBr4 two-dimensional (2D) layered perovskites |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Biswas, A |
| Secondary Authors | Bakthavatsalam, R |
| Tertiary Authors | Kundu, J |
| Journal | Chemistry of Materials |
| Volume | 29 |
| Issue | 18 |
| Pagination | 7816-7825 |
| Date Published | SEP |
| Type of Article | Journal Article |
| ISSN | 0897-4756 |
| Keywords | Doping (additives), Energy Efficiency, Energy Transfer, Exchange interactions, Excitons, Light Emitting Diodes |
| Abstract | Three-dimensional ABX3 perovskite material has attracted immense interest and applications in optoelectronic devices, because of their enabling properties. Recently, Mn2+ doping directly into APbCl3-type three-dimensional (3D) nanocrystals, manifesting host-to-dopant energy transfer, have been reported for LED display applications. Strongly bound excitons in the doped system can enhance the dopant-carrier exchange interactions, leading to efficient energy transfer. Here, we report the simple and scalable synthesis of Mn2+-doped (C4H9NH3)2PbBr4 two-dimensional (2D) layered perovskites. The Mn2+-doped 2D perovskite shows enhanced energy transfer efficiency from the strongly bound excitons of the host material to the d electrons of Mn2+ ions, resulting in intense orange-yellow emission, which is due to spin-forbidden internal transition (4T1 → 6A1) with the highest quantum yield (Mn2+) of 37%. Because of this high quantum yield, stability in ambient atmosphere, and simplicity and scalability of the synthetic procedure, Mn2+-doped 2D perovskites could be beneficial as color-converting phosphor material and as energy down-shift coating for perovskite solar cells. The newly developed Mn2+-doped 2D perovskites can be a suitable material to tune dopant-exciton exchange interactions to further explore their magneto-optoelectronic properties. |
| DOI | 10.1021/acs.chemmater.7b02429 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 9.407 |
Divison category:
Physical and Materials Chemistry
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