Thermochromism to tune the optical bandgap of a lead-free perovskite-type hybrid semiconductor for efficiently enhancing photocurrent generation

2017 ◽  
Vol 5 (38) ◽  
pp. 9967-9971 ◽  
Author(s):  
Weichuan Zhang ◽  
Zhihua Sun ◽  
Jing Zhang ◽  
Shiguo Han ◽  
Chengmin Ji ◽  
...  
Keyword(s):  
Semiconductor Material ◽  
Optical Bandgap ◽  
Lead Free ◽  
Tunable Bandgap ◽  
Photocurrent Generation ◽  
Photoelectric Properties ◽  
Perovskite Type

Here we report a new lead-free hybrid semiconductor material, (C16H20N2)SbBr5, in which thermochromism results in a wide tunable bandgap and superior photoelectric properties.

[C5H12N]CdCl3: an ABX3 perovskite-type semiconducting switchable dielectric phase transition material

2017 ◽  
Vol 4 (9) ◽  
pp. 1485-1492 ◽  
Author(s):  
Aurang Zeb ◽  
Zhihua Sun ◽  
Tariq Khan ◽  
Muhammad Adnan Asghar ◽  
Zhenyue Wu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Thermal Stability ◽  
Dielectric Properties ◽  
High Thermal Stability ◽  
Lead Free ◽  
Dielectric Phase ◽  
Perovskite Type

We report a new lead-free ABX3 perovskite-type hybrid, which displays high thermal stability, semiconducting and striking switchable dielectric properties.

Optical tunability of lead free double perovskite Cs2AgInCl6via composition variation

2020 ◽  
Vol 44 (43) ◽  
pp. 18656-18661
Author(s):  
Bidisha Nath ◽  
Basudev Pradhan ◽  
Subhendu K. Panda
Keyword(s):  
Double Perovskite ◽  
Lead Free ◽  
Luminescence Properties ◽  
Tunable Bandgap ◽  
Composition Variation

The tunable bandgap and luminescence properties of lead free double perovskite Cs2AgInCl6 are achieved through variable cation and halide composition.

Low-dimensional bismuth(III) iodide hybrid material with high activity for the fast removal of rhodamine B

2018 ◽  
Vol 74 (12) ◽  
pp. 1744-1749 ◽  
Author(s):  
Wei-Jun Chen ◽  
Kai-Bin Chu ◽  
Jun-Ling Song
Keyword(s):  
Solvothermal Method ◽  
Waste Water Treatment ◽  
Lead Free ◽  
Tetrameric Structure ◽  
Distorted Octahedra ◽  
Perovskite Crystal ◽  
Low Dimensional ◽  
Perovskite Type ◽  
Degradation Ability ◽  
Fast Removal

Organic–inorganic hybrid lead-based perovskite crystal materials have been widely studied due to their excellent optical–electronic properties. However, the toxicity of lead limits their widespread use. Here, a lead-free perovskite-type compound, tetrakis(1,2,3-trimethylimidazolium) di-μ3-iodido-tetra-μ2-iodido-decaiodidotetrabismuth(III), (C6H11N2)4[Bi4I16], has been successfully synthesized by a simple solvothermal method. It exhibits a zero-dimensional (0D) tetrameric structure, including edge-sharing [Bi4I16]4− distorted octahedra. The band gap of 2.0 eV is close to that of (NH4)3[Bi2I9]. Degradation ability measurements were performed to examine the potential application of this material as an alternative for waste-water treatment.

scholarly journals Evaluation of covalency of ions in lead-free perovskite-type dielectric oxides

AIP Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 105016 ◽  
Author(s):  
Naohisa Takesue ◽  
Kazuya Ishibashi ◽  
Kazuki Asakura
Keyword(s):  
Lead Free ◽  
Perovskite Type

scholarly journals The structure and optical properties of lead-free transparent KNLTN-La0.01 ceramics prepared by conventional sintering technique

2014 ◽  
Vol 32 (4) ◽  
pp. 597-603
Author(s):  
W. Yang ◽  
H. Xiu ◽  
Y. Xiong ◽  
J. Wang ◽  
C. Yuan ◽  
...  
Keyword(s):  
Optical Properties ◽  
Dispersion Model ◽  
Point Group ◽  
Lead Free ◽  
Dense Microstructure ◽  
Abo3 Perovskite ◽  
Conventional Sintering ◽  
Significant Wavelength ◽  
Perovskite Type ◽  
Better Than

Abstract(Na0.52K0.44Li0.04)0.97La0.01Ta0.20Nb0.80O3 (KNLTN-La0.01) lead-free subtransparent ceramics was prepared by a conventional sintering technique. The structure and the optical properties of the ceramics were investigated. The room temperature crystallographic indexing revealed the ABO3 perovskite type, tetragonal phase and P4mm point group in the ceramics. The surface and fractured surface SEM micrographs showed a dense microstructure with few micropores in KNLTN-La0.01 ceramics, which was obviously better than for the pure KNLTN ceramics. The refractive indexes of the films were investigated by an ellipsometer and the results show that the KNLTN-La0.01 subtransparent ceramics reveals significant wavelength dependent dispersion. The refractive index ranges from 2.14 to 2.06 with the wavelength increase from 380 nm to 900 nm. The dispersive behavior was analyzed by three parameters of Cauchy dispersion model and the values of the parameters A, B and C are 2.0610±0.0005, 0.0054±0.0003 and 0.00069±0.00004, respectively.

scholarly journals Dopants for Enhanced Performance of Tin-Based Perovskite Solar Cells—A Short Review

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1045
Author(s):  
Hairui Liu ◽  
Zuhong Zhang ◽  
Feng Yang ◽  
Jien Yang ◽  
Andrews Nirmala Grace ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Short Review ◽  
Water Soluble ◽  
Lead Free ◽  
Silicon Solar Cells ◽  
Photoelectric Properties ◽  
General Chemical ◽  
Alternative Material ◽  
The Stability

Lead-based perovskite solar cells had reached a bottleneck and demonstrated significant power conversion efficiency (PCE) growth matching the performance of traditional polycrystalline silicon solar cells. Lead-containing perovskite solar cell technology is on the verge of commercialization and has huge potential to replace silicon solar cells, but despite the very promising future of these perovskite solar cells, the presence of water-soluble toxic lead content is a growing concern in the scientific community and a major bottleneck for their commercialization. The less toxic, tin-based perovskite solar cells are promising alternatives for lead-free perovskite solar cells. Like lead-based perovskite, the general chemical formula composition of tin-based perovskite is ASnX3, where A is a cation and X is an anion (halogen). It is evident that tin-based perovskites, being less-toxic with excellent photoelectric properties, show respectable performance. Recently, numerous studies reported on the fabrication of Sn-based perovskite solar cells. However, the stability of this novel lead-free alternative material remains a big concern. One of the many ways to stabilize these solar cells includes addition of dopants. In this context, this article summarizes the most important fabrication routes employing dopants that have shown excellent stability for tin-based perovskite photovoltaics and elaborates the prospects of lead-free, tin based stable perovskite photovoltaics.

Electrical properties of lead-free thick film NTC thermistors based on perovskite-type BaCoIIxCoIII2xBi1−3xO3

2011 ◽  
Vol 65 (5) ◽  
pp. 836-839 ◽  
Author(s):  
C.L. Yuan ◽  
X.Y. Liu ◽  
C.R. Zhou ◽  
J.W. Xu ◽  
B. Li
Keyword(s):  
Electrical Properties ◽  
Thick Film ◽  
Lead Free ◽  
Ntc Thermistors ◽  
Perovskite Type
Sign in / Sign up

Export Citation Format

Share Document