Effect of Hydrogen Annealing on the Band Structure of ITO Nanoparticles
GUO Deshuang1,2, WANG Dengkui1, WANG Xinwei1,2, MENG Bingheng1, FANG Xuan1, FANG Dan1, WEI Zhipeng1
1 State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun 130022, China; 2 School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
Abstract: In this paper, high quality ITO nanoparticles were synthesized by coprecipitation method. The effect of H2 annealing on ITO structure and energy band was studied. The morphology of ITO particles was analyzed by scanning electron microscopy and the particle size was uniform. The type of chemical bond in ITO before and after annealing was analyzed by Fourier transform infrared spectroscopy. It was found that the vibration peak of In-O bond was weakened after annealing, and the surface of ITO particles overflowed with oxygen and formed into In-Sn alloy. At the same time, the X-ray diffraction curve did not change before and after annealing, indicating that the crystal structure of the main body of ITO nanoparticles has not changed. It can be seen from the absorption spectrum of the sample after annealing in the H2 atmosphere that as the annealing temperature increases, the band gap of ITO gradually increases, which is caused by the surface In-Sn alloy.
郭德双, 王登魁, 王新伟, 孟兵恒, 方铉, 房丹, 魏志鹏. 氢气退火对ITO纳米颗粒能带结构的影响[J]. 材料导报, 2020, 34(Z1): 26-28.
GUO Deshuang, WANG Dengkui, WANG Xinwei, MENG Bingheng, FANG Xuan, FANG Dan, WEI Zhipeng. Effect of Hydrogen Annealing on the Band Structure of ITO Nanoparticles. Materials Reports, 2020, 34(Z1): 26-28.
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2020, Vol. 34 
