Electronic transitions of the transparent delafossite-type CuGa1−xCrxO2 system: first-principles calculations and temperature-dependent spectral experiments

2017 ◽  
Vol 5 (1) ◽  
pp. 183-191 ◽  
Author(s):  
Junyong Wang ◽  
Peng Zhang ◽  
Qinglin Deng ◽  
Kai Jiang ◽  
Jinzhong Zhang ◽  
...  

The structure and optical properties of the CuGa1−xCrxO2 (CGCOx) system with 0 ≤ x ≤ 1 have been investigated by combining theoretical calculations and optical experiments.

2019 ◽  
Vol 33 (15) ◽  
pp. 1950156
Author(s):  
Lei Wang ◽  
Meixia Xiao ◽  
Bingtian Tu

LAP crystal is an excellent nonlinear optical material and it has some unexplained specificities, which makes the interaction between groups in molecule received much attention. In this paper, the first-principles calculations are performed to investigate the intergroup interactions by the electronic structure and optical properties of LAP crystal. The energy gap of LAP crystal is 5.02 eV, indicating that the electronic transition is easier than KDP crystal. The strong electronic interaction between the carboxyl, phosphate and guanidine groups is found. In addition, since the LAP molecule has the greatest dipole in [010] direction and the electronic transitions are most likely to occur between the carboxyl group, phosphate and guanidine groups located on both ends of the molecule along [010] direction, the LAP crystal shows specific optical properties in this direction. The results reveal the correlations between the optical properties and the intergroup interactions of LAP crystal.


2015 ◽  
Vol 17 (39) ◽  
pp. 25946-25955 ◽  
Author(s):  
Evangeline Drink ◽  
Philippe Dugourd ◽  
Elise Dumont ◽  
Nils Aronssohn ◽  
Rodolphe Antoine ◽  
...  

Action spectroscopy and first principles calculations are performed to characterize the optical properties of prodigiosin, and its sensibility to protonation, counter-ion binding, and isomerization.


2021 ◽  
Vol 21 ◽  
pp. 103827
Author(s):  
Jianrong Wang ◽  
Weibin Zhang ◽  
Qingfeng Wu ◽  
Shufang Gao ◽  
Yuanyuan Jin ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (42) ◽  
pp. 26432-26443
Author(s):  
Chol-Hyok Ri ◽  
Yun-Sim Kim ◽  
Un-Gi Jong ◽  
Yun-Hyok Kye ◽  
Se-Hun Ryang ◽  
...  

We propose lead-free potassium iodide perovskite solid solutions KBI3 with B-site mixing between Ge/Sn and Mg as potential candidates for photocatalysts based on systematic first-principles calculations.


2021 ◽  
Vol 271 ◽  
pp. 115266
Author(s):  
Zijia Zhao ◽  
Yongliang Yong ◽  
Ruilin Gao ◽  
Song Hu ◽  
Qingxiao Zhou ◽  
...  

RSC Advances ◽  
2020 ◽  
Vol 10 (72) ◽  
pp. 44373-44381
Author(s):  
Xiaozhe Wang ◽  
Qi Wang ◽  
Zhijun Chai ◽  
Wenzhi Wu

The thermal properties of FAPbBr3 perovskite nanocrystals (PNCs) is investigated by use of temperature-dependent steady-state/time-resolved photoluminescence and first-principle calculations.


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