Facile room-temperature synthesis of highly air‐stable and moisture-resistant CsPbX3/SiO2 nanocomposites for tunable white light-emitting diodes

Chao, Li‐Wei; Tang, Jian-Fu; Lin, Shih-Hung; Lee, Yi-Ting; Chen, Yilun; Hsieh, Chengho; Chen, Lung-Chien; Tseng, Zong‐Liang

doi:10.1016/j.mssp.2021.106158

Cited by 5 publications

(1 citation statement)

References 34 publications

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“…Another recent advance in optoelectronics is organic–inorganic hybrid perovskites, APbX 3 , in which A refers to an organic cation (e.g., CH 3 NH 3 + or NH 2 CH = NH 2 + ) and X refers to a halide. − All-inorganic CsPbX 3 perovskites have been used as an alternative to hybrid organic–inorganic perovskites, such as CH 3 NH 3 PbX 3 (MAPbX 3 ) and NH 2 CH=NH 2 PbX 3 (FAPbX 3 ), due to their stability under high-temperature and high-humidity conditions. In 2015, colloidal methods were first used to synthesize CsPbX 3 quantum dots (QDs) of specific size and composition. , All-inorganic perovskite QDs (PQDs) are applicable to a wide range of applications and can be synthesized via solution processes …”

Section: Introductionmentioning

confidence: 99%

Perovskite Quantum Dot–ZnO Nanowire Composites for Ultraviolet–Visible Photodetectors

Tang

Sie

Tseng

et al. 2022

ACS Appl. Nano Mater.

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In this study, we developed a photodetector and humidity sensor based on zinc oxide nanowires (ZnO NWs) with CsPbBr3 perovskite quantum dots (PQDs). PQDs are ideally suited to semiconductor sensors due to their excellent optoelectronic properties, including the high carrier mobility, high absorption coefficient, and effective charge transfer at heterojunctions. The ZnO NWs were created via chemical bath deposition, and PQDs were created via a one-step injection method. I–V curves revealed that the current leakage of PQD/ZnO NWs was lower than that of ZnO NWs. PQD/ZnO NWs also generated a larger number of photogenerated carriers, which improved sensor responses, regardless of the illumination wavelength. Under UV illumination, the photocurrent of both structures decreased with an increase in relative humidity; however, under green light illumination, the photocurrent of PQD/ZnO NWs increased with humidity. This study also investigated the optical properties of the two structures as candidate sensor mechanisms.

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Section: Introductionmentioning

confidence: 99%

Perovskite Quantum Dot–ZnO Nanowire Composites for Ultraviolet–Visible Photodetectors

Tang

Sie

Tseng

et al. 2022

ACS Appl. Nano Mater.

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Enhanced Long‐Term Luminescent Stability through Near‐Single‐Dot Passivation and Encapsulation of Perovskite Quantum Dots for Printable Photonics

et al. 2023

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Metal halide perovskites quantum dots (QDs) stand at the forefront of multifarious photonic applications, including micro‐light‐emitting diode and further augmented reality, virtual reality, and other novel display, lighting technologies. Barriers to applications, however, lie in their toxicity of lead, instability to light, moisture and heat, and processability at the nanoscale‐particle level. Herein, a simple and versatile postprocessing approach is reported for the near‐single‐dot passivation and encapsulation of representative lead‐free double perovskite Cs2Ag0.4Na0.6InCl6:Bi through liquid‐phase processing of perhydropolysilazane and quantum dots colloid with controllable hydrolysis curing. The conventional unstable oleylamine and oleic acid ligands are replaced by ‐NCl bonding on the surface of nanocrystal, accompanied by the resulting compact and robust silica layer without compromising the optical properties of the quantum dots. With the near‐single‐dot protection, the quantum dots do not show fluorescence quenching even when stored for more than 90 days and exhibit remarkably improved stability against heat, ultraviolet irradiation and humidity compared to the raw quantum dots. The strategy offers a versatile way of creating nanoscale‐particle level protection of luminescent quantum dots, and can be universally compatible with solution‐based patterning techniques and photonics applications where quantum dots are used.

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Room temperature synthesis of highly stable near-infrared FAPbI3@TEOS perovskite phosphor for NIR light-emitting diodes

Wei

Chu

2023

Ceramics International

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Facile room-temperature synthesis of highly air‐stable and moisture-resistant CsPbX3/SiO2 nanocomposites for tunable white light-emitting diodes

Cited by 5 publications

References 34 publications

Perovskite Quantum Dot–ZnO Nanowire Composites for Ultraviolet–Visible Photodetectors

Perovskite Quantum Dot–ZnO Nanowire Composites for Ultraviolet–Visible Photodetectors

Enhanced Long‐Term Luminescent Stability through Near‐Single‐Dot Passivation and Encapsulation of Perovskite Quantum Dots for Printable Photonics

Room temperature synthesis of highly stable near-infrared FAPbI3@TEOS perovskite phosphor for NIR light-emitting diodes

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