dc.contributor.author |
Pious, JK |
|
dc.contributor.author |
Basavarajappa, MG |
|
dc.contributor.author |
Muthu, C |
|
dc.contributor.author |
Nishikubo, R |
|
dc.contributor.author |
Saeki, A |
|
dc.contributor.author |
Chakraborty, S |
|
dc.contributor.author |
Takai, A |
|
dc.contributor.author |
Takeuchi, M |
|
dc.contributor.author |
Vijayakumar, C |
|
dc.date.accessioned |
2021-11-18T16:23:16Z |
|
dc.date.available |
2021-11-18T16:23:16Z |
|
dc.date.issued |
2021-06-24 |
|
dc.identifier.citation |
The Journal of Physical Chemistry Letters; 12(24): 5758-5764 |
en_US |
dc.identifier.uri |
https://pubs.acs.org/doi/10.1021/acs.jpclett.1c01321 |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/3918 |
|
dc.description.abstract |
Bismuth-based zero-dimensional perovskites garner high research interest because of their advantages, such as excellent moisture stability and lower toxicity in comparison to lead-based congeners. However, the wide optical bandgap (>2 eV) and poor photoconductivity of these materials are the bottlenecks for their optoelectronic applications. Herein, we report a combined experimental and theoretical study of the structural features and optoelectronic properties of two novel and stable zero-dimensional bismuth perovskites: (biphenyl bis(methylammonium))1.5BiI6·2H2O (BPBI) and (naphthalene diimide bis(ethylammonium))1.5BiI6·2H2O (NDBI). NDBI features a remarkably narrower bandgap (1.82 eV) than BPBI (2.06 eV) because of the significant orbital contribution of self-assembled naphthalene diimide cations at the band edges of NDBI. Further, the FP-TRMC analysis revealed that the photoconductivity of NDBI is about 3.7-fold greater than that of BPBI. DFT calculations showed that the enhanced photoconductivity in NDBI arises from its type-IIa band alignment, whereas type-Ib alignment was seen in BPBI. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Chemical Society |
en_US |
dc.subject |
electrical conductivity |
en_US |
dc.subject |
cations |
en_US |
dc.subject |
perovskites |
en_US |
dc.subject |
bismuth |
en_US |
dc.subject |
materials |
en_US |
dc.title |
Self-Assembled Organic Cations-Assisted Band-Edge Tailoring in Bismuth-Based Perovskites for Enhanced Visible Light Absorption and Photoconductivity |
en_US |
dc.type |
Article |
en_US |