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  Photocharging of semiconductor materials : database, quantitative data analysis, and application in organic synthesis

Savateev, A. (2022). Photocharging of semiconductor materials: database, quantitative data analysis, and application in organic synthesis. Advanced Energy Materials, 2200352. doi:10.1002/aenm.202200352.

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Savateev, Aleksandr1, Author              
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1Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2421702              

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Free keywords: hydrogen storage; organic synthesis; photocatalysis; photocharging; photodoping; semiconductors; solar batteries
 Abstract: Photocharging or photodoping is a process in which electrons are accumulated in a semiconductor upon bandgap excitation followed by quenching of the photogenerated holes by reductants. In semiconductors with excess of electrons, negative charge is compensated by cations, of which the most ubiquitous is H+. Photocharging of semiconductors has been studied since 1980s both from a fundamental perspective and application—as source of electrons and protons for reduction of organic compounds in the dark, solar-to-electric energy conversion, and recently also in the design of autonomous microswimmers. In this review, experimental data collected over 40 years of research are summarized and quantified. Maximum specific concentration of electrons stored in 1 g of a semiconductor, maximum average number of electrons stored per semiconductor particle, initial rate of photocharging, and initial rate of discharging are calculated for six classes of semiconductor materials, Ti-, Zn-, Cd-, In-, W-based and graphitic carbon nitrides. Dependence of these parameters on material specific surface area, particle volume, and other properties is analyzed and trends are derived. A public database of photocharged materials is created to facilitate design of high-performing materials with photocharging function, their application as rechargeable reductants in organic synthesis and development of devices.

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Language(s): eng - English
 Dates: 2022-04-162022
 Publication Status: Published in print
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Title: Advanced Energy Materials
  Abbreviation : Adv. Energy Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: - Sequence Number: 2200352 Start / End Page: - Identifier: ISSN: 1614-6832

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Title: Authorea
Source Genre: Journal
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Publ. Info: Hoboken : Authorea
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ZDB: 3044538-3