TY - JOUR
T1 - One-Pot Synthesis of CsPbX3 (X = Cl, Br, I)@Zeolite: A Potential Material for Wide-Color-Gamut Backlit Displays and Upconversion Emission
AU - Tong, Yao
AU - Wang, Qin
AU - Mei, Enrou
AU - Liang, Xiaojuan
AU - Gao, Wei
AU - Xiang, Weidong
N1 - Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/6/4
Y1 - 2021/6/4
N2 - All-inorganic perovskite (CsPbX3, X = Cl, Br, I) nanocrystals (NCs) with promising optical properties are recognized as a rising star among photoelectric materials, but their inevitable instabilities limit extensive application. Herein, a new one-step strategy for encapsulating CsPbX3 NCs with porous zeolite via the hot injection method is explored. By altering the mole ratio of PbX2, the emission wavelength of CsPbX3@zeolite is found to be regularly modulated from blue-emission (CsPbCl2Br@zeolite, 436 nm) to red-emission (CsPbBrI2@zeolite, 648 nm), thus enabling full spectrum adjustment. Due to the surface passivation of zeolite to CsPbX3 NCs, CsPbX3@zeolite possess an outstanding quantum yield and display excellent thermal/photo/air stability. Subsequently, white light-emitting diodes based on green-CsPbBr3@zeolite and red-CsPbBrI2@zeolite are constructed and applied to the backlit display, achieving a wide color gamut of 134.2% for NTSC 1953 and 99.8% for Rec. 2020. The CsPbX3@zeolite implanted with a polymethyl methacrylate film is used to realize upconversion emission under an 800 nm laser at room temperature. Furthermore, amplified spontaneous radiation based on CsPbBr3@zeolite films is achieved. These results convincingly indicate broad application prospects for CsPbX3@zeolite prepared via this simple method.
AB - All-inorganic perovskite (CsPbX3, X = Cl, Br, I) nanocrystals (NCs) with promising optical properties are recognized as a rising star among photoelectric materials, but their inevitable instabilities limit extensive application. Herein, a new one-step strategy for encapsulating CsPbX3 NCs with porous zeolite via the hot injection method is explored. By altering the mole ratio of PbX2, the emission wavelength of CsPbX3@zeolite is found to be regularly modulated from blue-emission (CsPbCl2Br@zeolite, 436 nm) to red-emission (CsPbBrI2@zeolite, 648 nm), thus enabling full spectrum adjustment. Due to the surface passivation of zeolite to CsPbX3 NCs, CsPbX3@zeolite possess an outstanding quantum yield and display excellent thermal/photo/air stability. Subsequently, white light-emitting diodes based on green-CsPbBr3@zeolite and red-CsPbBrI2@zeolite are constructed and applied to the backlit display, achieving a wide color gamut of 134.2% for NTSC 1953 and 99.8% for Rec. 2020. The CsPbX3@zeolite implanted with a polymethyl methacrylate film is used to realize upconversion emission under an 800 nm laser at room temperature. Furthermore, amplified spontaneous radiation based on CsPbBr3@zeolite films is achieved. These results convincingly indicate broad application prospects for CsPbX3@zeolite prepared via this simple method.
KW - CsPbX nanocrystals
KW - encapsulation
KW - upconversion lasing
KW - wide color gamut
KW - zeolite
UR - http://www.scopus.com/inward/record.url?scp=85102475714&partnerID=8YFLogxK
U2 - 10.1002/adom.202100012
DO - 10.1002/adom.202100012
M3 - Journal article
AN - SCOPUS:85102475714
SN - 2195-1071
JO - Advanced Optical Materials
JF - Advanced Optical Materials
M1 - 2100012
ER -