Open AccessInfluence of ZnSe:Te substrate's surface morphology on their optical properties
Author(s) -
В. П. Махній,
И. И. Герман,
Г. И. Бодюл,
И. М. Сенко,
V. P. Makhniy,
Indria Herman,
G. I. Bodul,
И. М. Сенко
Publication year - 2016
Publication title -
tehnologiâ i konstruirovanie v èlektronnoj apparature
Language(s) - English
Resource type - Journals
eISSN - 2309-9992
pISSN - 2225-5818
DOI - 10.15222/tkea2016.6.36
Subject(s) - photoluminescence , materials science , etching (microfabrication) , substrate (aquarium) , transmission electron microscopy , optics , morphology (biology) , scattering , quantization (signal processing) , nanocrystal , surface (topology) , optical microscope , optoelectronics , scanning electron microscope , nanotechnology , composite material , geometry , physics , oceanography , mathematics , geology , layer (electronics) , biology , computer science , computer vision , genetics
The authors have experimentally established, that etching of ZnSe:Te substrates in CrO3:HCl=2:1 and H2SO4:H2O2=3:1 solutions leads to formation of mirror and matte surfaces. Analysis of the topogram obtained by an atomic power microscope showed that matte surface is a set of equally oriented pyramids with basis size 2—5 µm and each of them is association of nanopyramids with 10—100 nm lateral size. In such samples wide photoluminescence band at 2,7—3.8 eV is a result of dimensional quantization in smaller nanocrystals. The latter also causes an observed decrease of transmission coefficient of substrates with matte surface in comparison to those with mirror surface owing to increase of light scattering processes.