Journal
ACS COMBINATORIAL SCIENCE
Volume 18, Issue 11, Pages 673-681Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscombsci.6b00053
Keywords
high-throughput screening; combinatorial science; band gap; UV-vis spectroscopy; optical spectroscopy; solar fuels
Funding
- Office of Science of the U.S. Department of Energy [DE-SC0004993]
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High-throughput experimentation provides efficient mapping of compositionproperty relationships, and its implementation for the discovery of optical materials enables advancements in solar energy and other technologies. In a high throughput pipeline, automated data processing algorithms are often required to match experimental throughput, and we present an automated Tauc analysis algorithm for estimating band gap energies from optical spectroscopy data. The algorithm mimics the judgment of an expert scientist, which is demonstrated through its application to a variety of high throughput spectroscopy data, including the identification of indirect or direct band gaps in Fe2O3, Cu2V2O7, and BiVO4. The applicability of the algorithm to estimate a range of band gap energies for various materials is demonstrated by a comparison of direct-allowed band gaps estimated by expert scientists and by automated algorithm for 60 optical spectra.
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