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Research Update: Comparison of salt- and molecular-based iodine treatments of PbS nanocrystal solids for solar cells
- Source :
- APL Materials, Vol 3, Iss 2, Pp 020701-020701-6 (2015)
- Publication Year :
- 2015
- Publisher :
- AIP Publishing LLC, 2015.
-
Abstract
- Molecular- and salt-based chemical treatments are believed to passivate electronic trap states in nanocrystal-based semiconductors, which are considered promising for solar cells but suffer from high carrier recombination. Here, we compare the chemical, optical, and electronic properties of PbS nanocrystal-based solids treated with molecular iodine and tetrabutylammonium iodide. Surprisingly, both treatments increase—rather than decrease—the number density of trap states; however, the increase does not directly influence solar cell performance. We explain the origins of the observed impact on solar cell performance and the potential in using different chemical treatments to tune charge carrier dynamics in nanocrystal-solids.
- Subjects :
- Biotechnology
TP248.13-248.65
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 2166532X
- Volume :
- 3
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- APL Materials
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.8179b6a8af3b490a8a863e91a796029e
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.4907158