Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 140, Issue 2, Pages 574-577Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b11125
Keywords
-
Categories
Funding
- EPSRC [M005143/1]
- EPSRC UK
- InterPhase project from BMBF [FKZ 13N13656, 13N13657]
- Marie Sklodowska-Curie actions [706552-APPEL, 653184-MPerS]
- EPSRC [EP/M024881/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M024881/1] Funding Source: researchfish
Ask authors/readers for more resources
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 MAPbBr(3) 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available