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Perovskite Quantum Dots and Their Application in Light-Emitting Diodes

Perovskite Quantum Dots and Their Application in Light-Emitting Diodes

Hung-Chia Wang, Zhen Bao, Hsin-Yu Tsai, An-Cih Tang, Ru-Shi Liu

Small. 2018 Jan;14(1).

PMID: 29194973

Abstract:

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) PbBr3 PQDs, PQDs with organic-inorganic mixed cations, divalent cation doped colloidal CsPb1-x Mx Br3 PQDs (M = Sn2+ , Cd2+ , Zn2+ , Mn2+ ) featuring partial cation exchange, and heterovalent cation doped into PQDs (Bi3+ ). 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS76931	Perovskite quantum dots			Price

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