Ravi, Vikash Kumar ; Scheidt, Rebecca A. ; Nag, Angshuman ; Kuno, Masaru ; Kamat, Prashant V. (2018) To Exchange or Not to Exchange. Suppressing Anion Exchange in Cesium Lead Halide Perovskites with PbSO4–Oleate Capping ACS Energy Letters, 3 (4). pp. 1049-1055. ISSN 2380-8195
Full text not available from this repository.
Official URL: https://doi.org/10.1021/acsenergylett.8b00380
Related URL: http://dx.doi.org/10.1021/acsenergylett.8b00380
Abstract
The ease of halide ion exchange in metal halide nanocrystals offers an opportunity to utilize them in a layered or tandem fashion to achieve graded bandgap films. We have now successfully suppressed the halide ion exchange by capping CsPbBr3 and CsPbI3 nanocrystals with PbSO4–oleate to create a nanostructure assembly that inhibits the exchange of anions. Absorption measurements show that the nanocrystal assemblies maintain their identity as either CsPbBr3 or CsPbI3 for several days. Furthermore, the effect of PbSO4–oleate capping on the excited state dynamics has also been elucidated. The effectiveness of PbSO4–oleate capping of lead halide perovskite nanocrystals offers new opportunities to overcome the challenges of halide ion exchange and aid toward the tandem design of perovskite light-harvesting assemblies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 142129 |
| Deposited On: | 11 Jan 2026 05:50 |
| Last Modified: | 11 Jan 2026 05:50 |
Repository Staff Only: item control page
