Abstract
ABSTRACTComputational screening is becoming increasingly useful in the search for new materials. We are interested in the design of new semiconductors to be used for light harvesting in a photoelectrochemical cell. In the present paper, we study the double perovskite structures obtained by combining 46 stable cubic perovskites which was found to have a finite bandgap in a previous screening-study.1 The four-metal double perovskite space is too large to be investigated completely. For this reason we propose a method for combining different metals to obtain a desired bandgap. We derive some bandgap design rules on how to combine two cubic perovskites to generate a new combination with a larger or smaller bandgap compared with the constituent structures. Those rules are based on the type of orbitals involved in the conduction bands and on the size of the two cubic bandgaps. We also see that a change in the volume has an effect on the size of the bandgap. In addition, we suggest some new candidate materials that can be used as photocatalysts in one- and two-photon water splitting devices.
References
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Dates
Type | When |
---|---|
Created | 12 years, 4 months ago (April 19, 2013, 5:27 a.m.) |
Deposited | 4 years, 5 months ago (Feb. 24, 2021, 3:55 p.m.) |
Indexed | 1 year, 9 months ago (Nov. 20, 2023, 7:56 a.m.) |
Issued | 12 years, 7 months ago (Jan. 1, 2013) |
Published | 12 years, 7 months ago (Jan. 1, 2013) |
Published Online | 12 years, 5 months ago (March 22, 2013) |
Published Print | 12 years, 7 months ago (Jan. 1, 2013) |
@article{Castelli_2013, title={Bandgap Engineering of Double Perovskites for One- and Two-photon Water Splitting}, volume={1523}, ISSN={1946-4274}, url={http://dx.doi.org/10.1557/opl.2013.450}, DOI={10.1557/opl.2013.450}, journal={MRS Proceedings}, publisher={Springer Science and Business Media LLC}, author={Castelli, Ivano E. and Thygesen, Kristian S. and Jacobsen, Karsten W.}, year={2013} }