Aqueous Sulfur Passivation of N-Type GaSb Substrates Studied by Photoluminescence Spectroscopy

作     者：Delia M.Hurtado-Castaneda JoséL.Herrera-Perez JoséS.Arias-Cerón Claudia Reyes-Betanzo Patricia Rodriguez-Fragoso Julio G.Mendoza-Alvarez 

作者机构：Electronics DepartmentNational Institute of AstrophysicsOptics and ElectronicsPueblaMéxico Instituto Politécnico Nacional-UPIITAMéxico DFMéxico Physics DepartmentCinvestav-IPNMéxico DFMéxico 

出 版 物：《Natural Science》 (自然科学期刊（英文）)

年 卷 期：2014年第6卷第12期

页      面：963-967页

学科分类：07[理学] 0703[理学-化学] 

基　　金：partially supported by the ICyTDF and CONACYT México 

主　　题：GaSb Photoluminescence Spectroscopy Sulfur Passivation 

摘      要：In this work the influence of aqueous sulfur passivation on the surface of n-type (100) GaSb single crystals has been studied through low-temperature photoluminescence (PL) characterization. The samples were passivated at different times using aqueous solutions of sodium sulfide. PL spectroscopy was used to determinate the optimum time of sulfur passivation, through the measurement of the PL intensity for the different passivation times. For the samples measured, the PL spectra show the presence of two emission bands, whose intensity and energy position change for the different passivation times of the GaSb samples. According to the PL results, a passivation surface treatment of 6 min shows the highest PL intensity spectrum.