Abstract
The compositional doping techniques can delicately tune the band gap, carrier concentration, and mobility of perovskites to optimize the photoelectric properties of materials. It is reported that the doped perovskites have been widely researched in the photovoltaic and photoelectronic field. Here, we show that the photoluminescence intensity and carrier lifetime of CH 3 NH 3 PbI 3 films have been improved by 3 orders of magnitude by incorporating abundant MnAc 2 ·4H 2 O in the perovskite precursor solution, which benefits from the morphological change and surface passivation induced by hydration water and surface manganese acetate. We also witness the increased photoluminescence quantum yield for film and the changed power conversion efficiency for perovskite solar cells. More importantly, the enhanced chemical stability of perovskite is displayed by immersing films into the water.
| Original language | English |
|---|---|
| Pages (from-to) | 16174-16180 |
| Number of pages | 7 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 11 |
| Issue number | 17 |
| DOIs | |
| State | Published - 1 May 2019 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- carrier lifetime
- MnAc insertion
- perovskite
- photoluminescence
- surface passivation
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