scholarly journals Spectral optimization of white light from hybrid metal halide perovskites

OSA Continuum ◽  
2019 ◽  
Vol 2 (6) ◽  
pp. 1880 ◽  
Author(s):  
Peifen Zhu ◽  
Hongyang Zhu ◽  
Gopi Chandra Adhikari ◽  
Saroj Thapa
Author(s):  
Yao Li ◽  
Kaimin Du ◽  
Manli Zhang ◽  
Xuan Gao ◽  
Yu Lu ◽  
...  

Metal halide perovskites are a new class of promising materials in optoelectronic applications. As optoelectronic properties of the lead halide perovskites are determined largely by their morphology, the morphology of...


APL Materials ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 010902 ◽  
Author(s):  
Michael Worku ◽  
Liang-Jin Xu ◽  
Maya Chaaban ◽  
Azza Ben-Akacha ◽  
Biwu Ma

Author(s):  
Lintao Wang ◽  
Zhuang zhuang Ma ◽  
Fei Zhang ◽  
Meng Wang ◽  
Xu Chen ◽  
...  

As a newly-emerging candidate for solid-state phosphors, metal-halide perovskites have attracted intensive attention in the field of white light-emitting devices (WLEDs) recently. However, their further commercial applications are severely hampered...


2019 ◽  
Author(s):  
Subhajit Bhattacharjee ◽  
Sonu Pratap Chaudhary ◽  
Sayan Bhattacharyya

<p>Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar charge carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics and optoelectronics industries. However their limited ambient stability, particularly those of iodide perovskites, obscures their use as photocatalysts especially in aqueous medium. In an unprecedented approach we have exploited the photo-absorption property of the less toxic lead-free Cs<sub>3</sub>Bi<sub>2</sub>X<sub>9 </sub>(X = Br, I) nanocrystals (NCs) to catalyse the degradation of water pollutant organic dye, methylene blue (MB) in presence of visible light at room temperature. After providing a proof-of-concept with bromide perovskites in isopropanol, the perovskites are employed as photocatalysts in water medium by designing perovskite/Ag<sub>2</sub>S and perovskite/TiO<sub>2 </sub>composite systems, with Type I (or quasi Type II) and Type II alignments, respectively. Ag<sub>2</sub>S and TiO<sub>2</sub> coatings decelerate penetration of water into the perovskite layer while facilitating charge carrier extraction. With a minimal NC loading, Cs<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub>/Ag<sub>2</sub>S degrades ~90% MB within an hour. Our approach has the potential to unravel the photocatalytic properties of metal halide perovskites for a wide spectrum of real-life applications. </p>


2019 ◽  
Author(s):  
Mykhailo Sytnyk ◽  
Ole Lytken ◽  
Tim Freund ◽  
Wolfgang Heiss ◽  
Christina Harreiss ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document