Temperature Sensitive and Reversible Halide Ion Exchange in Inorganic–Organic Hybrid CH3NH3PbI3−xBrx Mixed-Halide Perovskite

2021 ◽  
Vol 16 (4) ◽  
pp. 670-674
Author(s):  
Shuting Cui ◽  
Xun Sun ◽  
SiWen Tao ◽  
Huawei Zhou ◽  
Jie Yin ◽  
...  
Keyword(s):  
High Temperature ◽  
Ion Exchange ◽  
Band Gap ◽  
Room Temperature ◽  
Temperature Sensitive ◽  
Mechanism Study ◽  
Interesting Phenomenon ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Halide Perovskite

Ion exchange of organic-inorganic hybrid perovskite plays a significant role in controlling the performance of materials ant its devices. In this study, an interesting phenomenon was observed that the precipitate in suspension (CH3NH3PbI3−xBrx in γ-butyrolactone) brought out different colors at high and room temperature. The mechanism study appears that the phenomenon is controlled by temperature sensitive and reversible halide ion exchange in organic-inorganic hybrid CH3NH3PbI3−xBrx mixed-halide perovskite. The results of structure phase, element composition morphology and band gap illustrate that high temperature 55 °C is beneficial to the increasing of I content in MAPbI3−xBrx and room temperature or lower is advantageous to increasing of Br content in MAPbI3−xBrx. Compared with MAPbI0.76Br2.24 precipitate acquired at room temperature, MAPbI1.17Br1.83 precipitate got at high temperature illustrate wider lattice spacing, better crystallinity, better morphology and narrower band gap. The results and findings in this study will prompt the interest of readers or experts in the field of organic-inorganic hybrid perovskite materials and related optoelectronic applications.

scholarly journals Temperature Sensitive and Reversible Halide Ion Exchange in Inorganic-Organic Hybrid CH3NH3Pbl3-xBrx Mixed-halide Perovskite

2021 ◽  
Author(s):  
Shuting Cui ◽  
Xun Sun ◽  
SiWen Tao ◽  
Huawei Zhou ◽  
Jie Yin ◽  
...  
Keyword(s):  
High Temperature ◽  
Ion Exchange ◽  
Band Gap ◽  
Room Temperature ◽  
Temperature Sensitive ◽  
Mechanism Study ◽  
Interesting Phenomenon ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Halide Perovskite

Ion exchange of organic-inorganic hybrid perovskite plays an important role in controlling the performance of materials ant its devices. In this study, we found an interesting phenomenon that the precipitate in the in suspension (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Br<sub>x</sub> in γ – butyrolactone) presented different colors at high and room temperature. The mechanism study shows that the phenomenon is controlled by temperature sensitive and reversible halide ion exchange in organic-inorganic hybrid CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Br<sub>x</sub> mixed-halide perovskite. The results of structure phase, element composition morphology and band gap indicate that high temperature 55 °C is beneficial to the increasing of I content in MAPbI<sub>3-x</sub>Br<sub>x </sub>and room temperature or lower is beneficial to increasing of Br content in MAPbI<sub>3-x</sub>Br<sub>x</sub>.measurement were carried out. Compared with MAPbI<sub>0.76</sub>Br<sub>2.24</sub> precipitate obtained at room temperature, MAPbI<sub>1.17</sub>Br<sub>1.83 </sub>precipitate obtained at high temperature exhibit wider lattice spacing, better crystallinity, better morphology and narrower band gap.<sub> </sub>The results and findings in this study will arouse the interest of readers or experts in the field of organic-inorganic hybrid perovskite materials and related optoelectronic applications.

scholarly journals Temperature Sensitive and Reversible Halide Ion Exchange in Inorganic-Organic Hybrid CH3NH3Pbl3-xBrx Mixed-halide Perovskite

2021 ◽  
Author(s):  
Shuting Cui ◽  
Xun Sun ◽  
SiWen Tao ◽  
Huawei Zhou ◽  
Jie Yin ◽  
...  
Keyword(s):  
High Temperature ◽  
Ion Exchange ◽  
Band Gap ◽  
Room Temperature ◽  
Temperature Sensitive ◽  
Mechanism Study ◽  
Interesting Phenomenon ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Halide Perovskite

Ion exchange of organic-inorganic hybrid perovskite plays an important role in controlling the performance of materials ant its devices. In this study, we found an interesting phenomenon that the precipitate in the in suspension (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Br<sub>x</sub> in γ – butyrolactone) presented different colors at high and room temperature. The mechanism study shows that the phenomenon is controlled by temperature sensitive and reversible halide ion exchange in organic-inorganic hybrid CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3-x</sub>Br<sub>x</sub> mixed-halide perovskite. The results of structure phase, element composition morphology and band gap indicate that high temperature 55 °C is beneficial to the increasing of I content in MAPbI<sub>3-x</sub>Br<sub>x </sub>and room temperature or lower is beneficial to increasing of Br content in MAPbI<sub>3-x</sub>Br<sub>x</sub>.measurement were carried out. Compared with MAPbI<sub>0.76</sub>Br<sub>2.24</sub> precipitate obtained at room temperature, MAPbI<sub>1.17</sub>Br<sub>1.83 </sub>precipitate obtained at high temperature exhibit wider lattice spacing, better crystallinity, better morphology and narrower band gap.<sub> </sub>The results and findings in this study will arouse the interest of readers or experts in the field of organic-inorganic hybrid perovskite materials and related optoelectronic applications.

Decisive Influence of Amorphous PbI2-x on Photodegradation of Halide Perovskite

2021 ◽  
Author(s):  
Yue Lu ◽  
Jingcong Hu ◽  
Yang Ge ◽  
Bohai Tian ◽  
Zeyu Zhang ◽  
...  
Keyword(s):  
Inorganic Hybrid ◽  
Decisive Influence ◽  
Hybrid Perovskite ◽  
Perovskite Material ◽  
Halide Perovskite

Capturing the photolysis process of archetypal perovskite material (such as methylammonium lead triiodide, MAPbI3) into metallic Pb0 is fundamentally important to understand the photodegradation pathway of organic-inorganic hybrid perovskite (OIHP)....

scholarly journals Spin‐Polarized Electronic Transport through Ferromagnet/Organic–Inorganic Hybrid Perovskite Spinterfaces at Room Temperature

2019 ◽  
Vol 6 (19) ◽  
pp. 1900718 ◽  
Author(s):  
Kai Wang ◽  
Qin Yang ◽  
Jiashun Duan ◽  
Caixia Zhang ◽  
Fenggui Zhao ◽  
...  
Keyword(s):  
Electronic Transport ◽  
Room Temperature ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Spin Polarized

Tailoring nucleation and grain growth by changing the precursor phase ratio for efficient organic lead halide perovskite optoelectronic devices

2017 ◽  
Vol 5 (39) ◽  
pp. 10114-10121 ◽  
Author(s):  
Swaminathan Venkatesan ◽  
Mehedhi Hasan ◽  
Junyoung Kim ◽  
Nader R. Rady ◽  
Sandeep Sohal ◽  
...  
Keyword(s):  
Grain Growth ◽  
Optoelectronic Devices ◽  
Nucleation And Growth ◽  
Molar Ratio ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Precursor Phase ◽  
Organic Lead ◽  
Halide Perovskite ◽  
Lead Halide

The nucleation and growth of organic–inorganic hybrid perovskite films induced by the molar ratio of precursor components and their role in optoelectronic performance are investigated.

scholarly journals Influence of bath temperature on microstructure and NH3 sensing properties of chemically synthesized CdO thin films

2019 ◽  
Vol 37 (1) ◽  
pp. 25-32
Author(s):  
A.K. Sharma ◽  
S.S. Potdar ◽  
M.A. Yewale ◽  
Deepak B. Shirgaonkar ◽  
K.S. Pakhare ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
High Temperature ◽  
Band Gap ◽  
Room Temperature ◽  
Nitrate Solution ◽  
Cadmium Nitrate ◽  
Monoclinic Crystal ◽  
Cdo Thin Films ◽  
Deposited Films

AbstractCadmium oxide (CdO) thin films were synthesized using chemical bath deposition (CBD) method from aqueous cadmium nitrate solution. The bath temperatures were maintained at room temperature (25 °C) and at higher temperature (80 °C). The structural studies revealed that the films showed mixed phases of CdO and Cd(OH)2 with hexagonal/monoclinic crystal structure. Annealing treatment removed the hydroxide phase and the films converted into pure CdO with cubic, face centered crystal structure. SEM micrographs of as-deposited films revealed nanowire-like morphology for room temperature deposited films while nanorod-like morphology for high temperature deposited films. However, cube-like morphology was observed after air annealing. Elemental composition was confirmed by EDAX analysis. Band gap energies of the as-deposited films varied over the range of 3 eV to 3.5 eV, whereas the annealed films showed band gap energy variation in the range of 2.2 eV to 2.4 eV. The annealed films were successfully investigated for NH3 sensing at different operating temperatures and at different gas concentrations. The room temperature synthesized film showed a response of 17.3 %, whereas high temperature synthesized film showed a response of 13.5 % at 623 K upon exposure to 24 ppm of NH3.

Effect of intermediate phases on the optical properties of PbI2-rich CH3NH3PbI3 organic–inorganic hybrid perovskite

2019 ◽  
Vol 21 (9) ◽  
pp. 5253-5261 ◽  
Author(s):  
Alonso W. P. Sanches ◽  
Marco A. T. da Silva ◽  
Neusmar J. A. Cordeiro ◽  
Alexandre Urbano ◽  
Sidney A. Lourenço
Keyword(s):  
Optical Properties ◽  
Spin Coating ◽  
Inorganic Hybrid ◽  
Spin Coating Method ◽  
Intermediate Phases ◽  
Hybrid Perovskite ◽  
Coating Method ◽  
Halide Perovskite ◽  
Lead Halide

Intermediate phases in the methylammonium lead halide perovskite (CH3NH3PbI3) films produced by the two-step spin coating method.

Brightly luminescent and color-tunable green-violet-emitting halide perovskite CH3NH3PbBr3 colloidal quantum dots: an alternative to lighting and display technology

2018 ◽  
Vol 20 (30) ◽  
pp. 19950-19957 ◽  
Author(s):  
Yonghao Liu ◽  
Quan Xu ◽  
Shuai Chang ◽  
Zhao Lv ◽  
Sheng Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Colloidal Quantum Dots ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Color Tunable ◽  
Display Technology ◽  
Halide Perovskite ◽  
Optoelectronic Applications

Organic–inorganic hybrid perovskite (CH3NH3PbX3, X = Cl, Br, or I) quantum dots have become one of the most promising materials for optoelectronic applications.

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