Open AccessModeling of diffusion motion of In nanoparticles in a CdTe crystal during laser-induced doping
Author(s) -
S. N. Levytskyi,
Tongzhou Zhao,
Zhang Cao,
A. Stronski
Publication year - 2021
Publication title -
fìzika ì hìmìâ tverdogo tìla
Language(s) - English
Resource type - Journals
eISSN - 2309-8589
pISSN - 1729-4428
DOI - 10.15330/pcss.22.2.301-306
Subject(s) - materials science , ohmic contact , crystal (programming language) , doping , laser , evaporation , cadmium telluride photovoltaics , irradiation , optoelectronics , electrode , diffusion , optics , analytical chemistry (journal) , nanotechnology , chemistry , computer science , physics , layer (electronics) , chromatography , nuclear physics , thermodynamics , programming language
In order to solve the problem of the ohmic contact between the crystal surface and the metal electrode in the manufacturing process of the X/γ-ray detector, this paper uses a laser to probe the doping process of In/CdTe crystals in different media. In this experiment, the Traveling Heater Method (THM) is used to obtain CdTe(111) crystals that meet the requirements (ρ >109Ω∙cm). In and Au materials are respectively coated on the surface of the crystal sample by the vacuum thermal evaporation method to obtain the crystal sample meeting the requirements. The high-resistance p-type CdTe crystal of a relatively thick In film is irradiated with nanosecond laser pulses, the In film is used as an n-type doping source and as an electrode after laser irradiation.