Perovskite Quantum Dots and Their Application in Light‐Emitting Diodes
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- Hung‐Chia Wang
- Department of Chemistry National Taiwan University Taipei 106 Taiwan
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- Zhen Bao
- Department of Chemistry National Taiwan University Taipei 106 Taiwan
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- Hsin‐Yu Tsai
- Department of Chemistry National Taiwan University Taipei 106 Taiwan
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- An‐Cih Tang
- Department of Chemistry National Taiwan University Taipei 106 Taiwan
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- Ru‐Shi Liu
- Department of Chemistry National Taiwan University Taipei 106 Taiwan
書誌事項
- 公開日
- 2017-11-30
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/smll.201702433
- 公開者
- Wiley
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>Perovskite quantum dots (PQDs) attract significant interest in recent years because of their unique optical properties, such as tunable wavelength, narrow emission, and high photoluminescence quantum efficiency (PLQY). Recent studies report new types of formamidinium (FA) PbBr<jats:sub>3</jats:sub> PQDs, PQDs with organic–inorganic mixed cations, divalent cation doped colloidal CsPb<jats:sub>1−</jats:sub><jats:italic><jats:sub>x</jats:sub></jats:italic>M<jats:italic><jats:sub>x</jats:sub></jats:italic>Br<jats:sub>3</jats:sub> PQDs (M = Sn<jats:sup>2+</jats:sup>, Cd<jats:sup>2+</jats:sup>, Zn<jats:sup>2+</jats:sup>, Mn<jats:sup>2+</jats:sup>) featuring partial cation exchange, and heterovalent cation doped into PQDs (Bi<jats:sup>3+</jats:sup>). These PQD analogs open new possibilities for optoelectronic devices. For commercial applications in lighting and backlight displays, stability of PQDs requires further improvement to prevent their degradation by temperature, oxygen, moisture, and light. Oxygen and moisture‐facilitated ion migration may easily etch unstable PQDs. Easy ion migration may result in crystal growth, which lowers PLQY of PQDs. Surface coating and treatment are important procedures for overcoming such factors. In this study, new types of PQDs and a strategy of improving their stabilities are introduced. Finally, this paper discusses future applications of PQDs in light‐emitting diodes.</jats:p>
収録刊行物
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- Small
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Small 14 (1), 1702433-, 2017-11-30
Wiley
