Journal article
Impact of Bi3+ heterovalent doping in organic-inorganic metal halide perovskite crystals
- Abstract:
- Intrinsic organic-inorganic metal halide perovskites (OIHP) based semiconductors have shown wide applications in optoelectronic devices. There have been several attempts to incorporate heterovalent metal (e.g., Bi3+) ions in the perovskites in an attempt to induce electronic doping and increase the charge carrier density in the semiconductor. It has been reported that inclusion of Bi3+ decreases the band gap of the material considerably. However, contrary to the earlier conclusions, despite a clear change in the appearance of the crystal as observed by eye, here we show that the band gap of MAPbBr3 crystals does not change due the presence of Bi3+ in the growth solution. An increased density of states in the band gap and use of very thick samples for transmission measurements, erroneously give the impression of a band gap shift. These sub band gap states also act as nonradiative recombination centers in the crystals.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
-
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(Preview, Accepted manuscript, pdf, 550.8KB, Terms of use)
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- Publisher copy:
- 10.1021/jacs.7b11125
Authors
+ Engineering and Physical Sciences Research Council
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- Funding agency for:
- Ramadan, AJ
- Grant:
- M005143/1
- EP/M024881/1
+ Federal Ministry of Education and Research
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- Funding agency for:
- Sendner, M
- Lovrinčić, R
- Grant:
- 13N13657
- 13N13657
+ Marie Skłodowska-Curie actions
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- Funding agency for:
- Nayak, PK
- Wenger, B
- Grant:
- 653184-MPerS
- 706552-APPEL
- Publisher:
- American Chemical Society
- Journal:
- Journal of the American Chemical Society More from this journal
- Volume:
- 140
- Issue:
- 2
- Pages:
- 574-577
- Publication date:
- 2018-12-21
- Acceptance date:
- 2017-12-21
- DOI:
- EISSN:
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1520-5126
- ISSN:
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0002-7863
- Pmid:
-
29266934
- Language:
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English
- Pubs id:
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pubs:813117
- UUID:
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uuid:f8ab077c-41af-4eee-be49-daf7f971282d
- Local pid:
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pubs:813117
- Source identifiers:
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813117
- Deposit date:
-
2018-06-13
Terms of use
- Copyright holder:
- American Chemical Society
- Copyright date:
- 2018
- Notes:
- © 2017 American Chemical Society. This is the accepted manuscript version of the article. The final version is available online from American Chemical Society at: 10.1021/jacs.7b11125
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