光电子快报(英文版), 2016, 12 (3): 192, Published Online: Oct. 12, 2017
TEM study of dislocations structure in In0.82Ga0.18As/In Pheterostructure with InGaAs as buffer layer
Abstract
In order to improve the quality of detector, InxGa1-xAs (x=0.82) buffer layer has been introduced in In0.82Ga0.18As/InP heterostructure. Dislocation behavior of the multilayer is analyzed through plane and cross section [110] by transmission electron microscopy (TEM) and high resolution transmission electron microscopy (HRTEM). The dislocations are effectively suppressed in InxGa1-xAs (x=0.82) buffer layer, and the density of dislocations in epilayer is reduced obviously. No lattice mismatch between buffer layer and epilayer results in no misfit dislocation (MD). The threading dislocations (TDs) are directly related to the multiplication of the MDs in buffer layer.
ZHAO Liang, GUO Zuo-xing, YUAN De-zeng, WEI Qiu-lin, ZHAO Lei. TEM study of dislocations structure in In0.82Ga0.18As/In Pheterostructure with InGaAs as buffer layer[J]. 光电子快报(英文版), 2016, 12(3): 192.