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Photocurrent Mapping in Single-Crystal Methylammonium Lead Iodide Perovskite Nanostructures.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Xiao, Rui Hou, Yasen Fu, Yongping Peng, Xingyue Wang, Qi González, Ernesto Jin, Song Yu, Dong |
| Copyright Year | 2016 |
| Abstract | We investigate solution-grown single-crystal methylammonium lead iodide (MAPbI3) nanowires and nanoplates with spatially resolved photocurrent mapping. Sensitive perovskite photodetectors with Schottky contacts are fabricated by directly transferring the nanostructures on top of prepatterned gold electrodes. Scanning photocurrent microscopy (SPCM) measurements on these single-crystal nanostructures reveal a minority charge carrier diffusion length up to 21 μm, which is significantly longer than the values observed in polycrystalline MAPbI3 thin films. When the excitation energy is close to the bandgap, the photocurrent becomes substantially stronger at the edges of nanostructures, which can be understood by the enhancement of light coupling to the nanostructures. These perovskite nanostructures with long carrier diffusion lengths and strong photonic enhancement not only provide an excellent platform for studying their intrinsic properties but may also boost the performance of perovskite-based optoelectronic devices. |
| Starting Page | 7710 |
| Ending Page | 7717 |
| Page Count | 8 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/acs.nanolett.6b03782 |
| PubMed reference number | 27960528 |
| Journal | Medline |
| Volume Number | 16 |
| Issue Number | 12 |
| Alternate Webpage(s) | http://yu.physics.ucdavis.edu/NanoLett%20perovskite.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/acs.nanolett.6b03782 |
| Journal | Nano letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
