Fabrication and properties of p-n-junctions based on Cd1-x Znx Te

Authors

  • Віктор Васильович Брус Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Марія Іванівна Ілащук Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Богдан Миколайович Грицюк Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Орест Архипович Парфенюк Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine
  • Павло Дмитрович Мар’янчук Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2013.19690

Keywords:

CdTe, p-n-junctions, laser, illumination, evaporation, diffusion, recombination, vacancies, current, signal

Abstract

Electrical properties of semiconductor p-n-junctions, fabricated by the illumination of Cd1-x Znx Te crystals by powerful laser pulses, were investigated.

The fabrication of barrier structures was carried out on the base of Cd1-xZnxTe single crystals with n-type of conductivity, grown by the Bridgman method at controllable cadmium vapor pressure.  The region with p-type of conductivity was created by means of a powerful ruby laser (l=0.694 μm, absorption coefficient in CdTe a=     6×104cm-1). 

The prepared structures were established to be abrupt p-n-junctions. Their I-V characteristics are determined by the generation-recombination processes within the space charge region as well as by the recombination at the interface between recrystallized layer and bulk semiconductor.

The C-V characteristics, measured at different frequencies of small amplitude (10 mV) AC signal, provide evidence on the presence of the series resistance and surface states at the interface between recrystallized layer and bulk semiconductor that is in good correlation with the results obtained from the I-V characteristics.

Author Biographies

Віктор Васильович Брус, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Candidate of engineering sciences, Assistant professor

Department of Electronics and Energy Engineering

Марія Іванівна Ілащук, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Candidate of physico-mathematical sciences, Assistant professor

Department of Electronics and Energy Engineering

Богдан Миколайович Грицюк, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Candidate of physico-mathematical sciences, Associate professor

Department of Radiotechnic and Information safety

Орест Архипович Парфенюк, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Doctor, Professor

Department of Electronics and Energy Engineering

Павло Дмитрович Мар’янчук, Fedkovich Chernivtsi National University st. Kotsyubinskogo 2, Chernivtsi, Ukraine, 58012

Doctor, Professor, Head of the Department

Department of Electronics and Energy Engineering

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Published

2014-01-04

How to Cite

Брус, В. В., Ілащук, М. І., Грицюк, Б. М., Парфенюк, О. А., & Мар’янчук, П. Д. (2014). Fabrication and properties of p-n-junctions based on Cd1-x Znx Te. Eastern-European Journal of Enterprise Technologies, 6(12(66), 107–109. https://doi.org/10.15587/1729-4061.2013.19690

Issue

Section

Physical and technological problems of radio engineering devices, telecommunication, nano-and microelectronics