Infrared and Laser Engineering, Volume. 51, Issue 1, 20210772(2022)
Research progress in inorganic perovskites white LEDs and visible light communication (Invited)
Fig. 2. (a) TEM image of SiO2-coating CsPbBr3 NCs[27]; (b) TEM image of SiO2/CsPbBr3 NCs with Janus structure; (c) Schematic of the whole formation process of CsPbBr3/SiO2 NCs with Janus structure[29]; (d) Schematic of the two-step synthesis of CsPbX3-zeolite-Y composites; Spectra change of white LEDs composed of (e) CsPb(Br,I)3 perovskite QDs and (f) CsPb(Br,I)3-zeolite-Y composites with increase of currents[31]; (g) CIE color coordinate and color triangle of white LEDs based on mesoporous silica CsPbBr3 NCs[32]
Fig. 4. (a) Crystal structure, (b) PL and PLE spectra, (c) schematic configuration coordinate for the excited-state reorganization of Cs3Cu2I5[46]; (d) PL spectra of Cs3Cu2Cl5 and CsCu2Cl3 synthesized at different temperatures[39]; (e) Power-dependent PL spectra of Cs4MnBi2Cl12; (f) Spectra of white LEDs based on Cs4MnBi2Cl12[40]
Fig. 5. (a) Crystal structure and (b) PL spectra excited under 310 nm of Pb2+-doped Cs3Cu2Br5[41]; (c) White-light PL spectra in Sb3+/Bi3+-codoped Cs2NaInCl6[42]; (d) Optical absorption and PL spectra of Cs2AgInCl6 and Cs2Ag0.6Na0.4InCl6[43]; (e) PL spectra of Cs2AgIn0.6B0.15La0.25Cl6 and Cs2AgIn0.8Bi0.2Cl6[47]; (f) CIE color coordinates of Li+/K+ alloyed Cs2AgBi0.01In0.99Cl6[48]
Fig. 6. (a) Schematic of band structure and (b) variety of EL spectra with the changes of blend ratio of white LED in CsPbBr
Fig. 7. (a) Schematic diagram of the preparation process of CsCu2I3@Cs3Cu2I5 composites; (b) Absorption and PL spectra of the CsCu2I3@Cs3Cu2I5 composites with varied CsI/CuI molar ratios precursor[54]; Time-resolved GIWAXS profiles of CsCu2I3/Cs3Cu2I5 composites (c) without Tween and (d) with Tween; (e) EL spectra of the device under different voltages and (f) curve of EQE versus current density[55] of white LED after CsCu2I3/Cs3Cu2I5processed by Tween
Fig. 8. (a) Bit-error rates(BERs) at different data rates[56]; (b) Typical schematic diagrams of VLC test system[58]; (c) Electrical-optical-electrical frequency response and (d) received signal-to-noise ratio of white LEDs signal in VLC system based on ZrO2/CsPbBr3[28]; (e) Frequency response of white LEDs at different current densities[59]; (f) Constellation diagrams for white LEDs in VCL based on Cs3Cu2Cl5 NCs[60]
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Shuangyi Zhao, Qionghua Mo, Baiqian Wang, Zhigang Zang. Research progress in inorganic perovskites white LEDs and visible light communication (Invited)[J]. Infrared and Laser Engineering, 2022, 51(1): 20210772
Category: Optical communication and sensing
Received: Oct. 25, 2021
Accepted: --
Published Online: Mar. 8, 2022
The Author Email: Zang Zhigang (zangzg@cqu.edu.cn)