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The Role of Intrinsic Defects in Methylammonium Lead Iodide Perovskite.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kim, Jongseob Lee, Sung-Hoon Lee, Jung Hoon Ki-Ha |
| Copyright Year | 2014 |
| Abstract | One of the major merits of CH3NH3PbI3 perovskite as an efficient absorber material for the photovoltaic cell is its long carrier lifetime. We investigate the role of the intrinsic defects of CH3NH3PbI3 on its outstanding photovoltaic properties using density-functional studies. Two types of defects are of interest, i.e., Schottky defects and Frenkel defects. Schottky defects, such as PbI2 and CH3NH3I vacancy, do not make a trap state, which can reduce carrier lifetime. Elemental defects like Pb, I, and CH3NH3 vacancies derived from Frenkel defects act as dopants, which explains the unintentional doping of methylammonium lead halides (MALHs). The absence of gap states from intrinsic defects of MALHs can be ascribed to the ionic bonding from organic-inorganic hybridization. These results explain why the perovskite MALHs can be an efficient semiconductor, even when grown using simple solution processes. It also suggests that the n-/p-type can be efficiently manipulated by controlling growth processes. |
| Starting Page | 125 |
| Ending Page | 127 |
| Page Count | 3 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.dsc.rcast.u-tokyo.ac.jp/perovskite/20140220JPCLett2014_1312.pdf |
| PubMed reference number | 26269973v1 |
| Alternate Webpage(s) | https://doi.org/10.1021/jz500370k |
| DOI | 10.1021/jz500370k |
| Journal | The journal of physical chemistry letters |
| Volume Number | 5 |
| Issue Number | 8 |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Absorber Device Component Iodides Ionic Bonding Lead Poisoning, Nervous System Neural Tube Defects Nucleic Acid Hybridization Pyschological Bonding Semiconductors methylammonium ion perovskite |
| Content Type | Text |
| Resource Type | Article |
