We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Improved Stability and Photoluminescence Yield of Mn<sup>2+</sup>-Doped CH<sub>3</sub>NH<sub>3</sub> PbCl<sub>3</sub> Perovskite Nanocrystals.
- Authors
Li, Xianli; Guo, Yan; Luo, Binbin
- Abstract
Organic-inorganic CH3NH3PbCl3 perovskite nanocrystals (PNCs) doped with Mn2+, CH3NH3PbxMn1-xCl3, have been successfully prepared using a reprecipitation method at room temperature. Structural and morphological characterizations reveal that the CH3NH3PbxMn1-xCl3 PNCs with cubic phase transforms from particles to cubes and increases in size from 16.2 - 4.4 nm in average diameter to 25.3 ± 7.2 nm in cubic length after the addition of Mn2+ precursor. The CH3NH3PbxMn1-xCl3 PNCs exhibit a weak exciton emission at ~405 nm with a low absolute quantum yield (QY) of around 0.4%, but a strong Mn2+ dopant emission at ~610 nm with a high QY of around 15.2%, resulting from efficient energy transfer from the PNC host to the Mn2+ dopant via the 4T1!6A1 transition. In addition, the thermal and air stability of CH3NH3PbxMn1-xCl3 PNCs are improved due to the passivation with (3-aminopropyl) triethoxysilane (APTES), which is important for applications such as light emitting diodes (LEDs).
- Subjects
PHOTOLUMINESCENCE; NANOCRYSTALS; PEROVSKITE spectra
- Publication
Crystals (2073-4352), 2018, Vol 8, Issue 1, p4
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst8010004