Journal of Inorganic Materials, Volume. 34, Issue 1, 72(2019)
BN/CsPbX3 Composite Nanocrystals: Synthesis and Applications in White LED
Figures & Tables(15)
. Scheme of the all-solid-state ball milling procedure for synthesis of CsPbX3 NCs (a) and optical image of large-scale red emission powder under UV light excitation (365 nm) (b)
. PL intensity of CsPbBr3 NCs powder with different size of grind medium under the same test condition
. PL intensity of CsPbBr3 NCs powder with different ball-to-powder ratio under the same condition
. (a) PL emission spectra of CsPbX3 NCs powder, the corresponding optical images under normal daylight and UV light (black background) were exhibited inside; (b) Color gamut spectra of perovskite NCs (the inner black line indicating NTSC)
. EDS information of CsPbI3 NCs powder(a) SEM image with corresponding atomic percentage information; (b) EDS spectrum of CsPbI3 NCs
. PL spectra of CsPbBr3 NCs powder with various rotation speed of the planetary mill
. The air stability of CsPbI3 NCs powder (a) The PL stability exposed in air; (b) X-ray diffraction (XRD) pattern of CsPbI3 NCs powder; (c) Photographs of the powder samples with time changing under the sunlight (left) and UV light (right)
. The X-Ray diffraction spectra of CsPbX3 NCs powder with various halogen ratios
. Analysis of air stability of CsPbI3 NCs (a) Stability test of CsPbI3 NCs powder with different BN quantity; (b) SEM image of CsPbI3 NCs; (c) Energy dispersive spectroscopy (EDS) mapping images of (b)
. Proof-of-concept demonstration of white LED by blending green and red Pe-NCs on a commercial blue LED chip (a) Schematically depicts the packing method of white LED; (b) EL spectra of three typical devices exhibiting (1) green-white, (2) white, and (3) red-white; (c) Photographs of the white LED under different operating voltage
. The stability of white-light LED (a) The luminance stability of white-light LED placed in the air measured at the voltage of 2.7 V; (b) The working stability of the white-light LED after continuous operating for 2 h
Table 1. Comprehensive comparisons for the representative perovskite NCs
View tableView in ArticleTable 1. Comprehensive comparisons for the representative perovskite NCs
CsPbX3 Emission peak/nm FWHM/nm CsPbX3 Emission peak/nm FWHM/nm CsPbCl3 417 23 CsPbIBr2 551 41 CsPbCl2.14Br0.86 430 23 CsPbI2Br 605 47 CsPbCl2Br 447 27 CsPbI2.14Br0.86 642 46 CsPbClBr2 483 38 CsPbI3 680 40 CsPbBr3 532 33
Table 2. Comparison of FWHM of CsPbX3 with typical solution synthesis
View tableView in ArticleTable 2. Comparison of FWHM of CsPbX3 with typical solution synthesis
Sample Synthetic methods FWHM/nm Color/nm Ref. CsPbX3(X=Cl, Br, I) All-solid-state ball milling 23-47 417-680 This work CsPbX3(X=Cl, Br, I) Supersaturated recrystallization 12-39 400-650 [1] CsPbX3(CsPb(Br/Cl)3 -CsPbI3) Droplet-based microfluidic platform 20-45 470-690 [2] CsPbX3(X=Cl, Br, I) Fast Anion-Exchange 12-40 410-700 [3]
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Yu-Hui DONG, Shu-Yu ZENG, Bo-Ning HAN, Jie XUE, Ji-Zhong SONG, Hai-Bo ZENG, [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. BN/CsPbX3 Composite Nanocrystals: Synthesis and Applications in White LED[J]. Journal of Inorganic Materials, 2019, 34(1): 72
Paper Information
Category: Research Articles
Received: May. 2, 2018
Accepted: --
Published Online: Feb. 4, 2021
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