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Giant Bandgap Reduction of Co3TeO6 via Pressure Engineeringстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Ying Chen, Li Xiangdong, Liu Ke, Su Qiqi, Wang Hao, Mathieu Roland, Ivanov Sergey, Weil Matthias, Geng Hua Y., Zhang Zengming, Wang Yonggang, Lazor Peter, Liu Lei
- Журнал: Journal of Physical Chemistry Letters
- Том: 16
- Год издания: 2025
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 3509
- Последняя страница: 3517
- DOI: 10.1021/acs.jpclett.5c00492
- Аннотация: Double perovskites represent a class of materials with promisingfundamental properties and a broad spectrum of potential applications. However, thewide bandgap energy in double perovskites presents a hindrance to further enhancementof their photovoltaic efficiency. In the present study, a high-pressure technique isemployed to tune the bandgap energy of double perovskite Co3TeO6 (CTO). A giantbandgap reduction of ∼37% from 2.93 to 1.85 eV has been observed after high-pressuretreatment. Subsequent synchrotron-based X-ray diffraction and Raman spectroscopyresults reveal that the significant bandgap reduction of CTO accompanies a sequence ofstructural phase transitions during compression and decompression. Furthermore, thehigh-pressure phase with a smaller bandgap energy of 1.85 eV turns out to be quenchableto ambient conditions, making the quenched CTO a promising light-harvesting materialfor photovoltaic applications. The present results demonstrate that high pressure canrepresent a green and efficient technique to tune the properties of multifunctionalmaterials and serve as a guide for searching for stable and environmentally friendly light-harvesting materials
- Добавил в систему: Иванов Сергей Александрович