| Perovskite nanocrystal-embedded glasses for photonic applications |
Thi Thuy Pham, Hansol Lee, Jinju Lee, Woon Jin Chung
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| Institute for Rare Metals and Division of Advanced Material Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31080, Republic of Korea |
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Received: May 27, 2022; Revised: July 26, 2022 Accepted: July 30, 2022. Published online: August 16, 2022. |
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| ABSTRACT |
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Perovskite nanocrystals (PNCs) based on cesium lead halide CsPbX3 (X = Cl, Br, I) have rapidly emerged as one of the most promising photonic materials in recent years due to their characteristic high quantum effi ciency and narrow emission bandwidth. However, their poor stability against external infl uences such as moisture, oxygen, heat, and light irradiation has hindered their practical photonic applications in light-emitting diodes, displays, and photovoltaic cells. Among various attempts to overcome their shortcomings, an inorganic glass matrix can be an eff ective and practical solution, providing chemically stable encapsulation of the PNCs. Signifi cant improvements in chemical, thermal, and photo-stabilities compared with the colloidal PNCs have been reported, without degrading their unique optical properties. Perovskite nanocrystal-embedded glasses (PNEGs) can be fabricated using conventional melt-quenching methods followed by heat treatment. Various combinations of glass and PNC compositions have been reported, demonstrating practical feasibility in various photonic applications. |
| Key words:
Perovskite · Nanocrystals · Glass · Optical properties · Stability |
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