Surface treatment effects on the surface recombination velocity of ZnS/HgCdTe interface

Jong Hwa Choi; Hee Chul Lee; MinSung Choi

doi:10.1117/12.391752

17 July 2000 Surface treatment effects on the surface recombination velocity of ZnS/HgCdTe interface

Jong Hwa Choi, Hee Chul Lee, MinSung Choi

Proceedings Volume 4028, Infrared Detectors and Focal Plane Arrays VI; (2000) https://doi.org/10.1117/12.391752
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

In this paper, two different surface treatments for bulk HgCdTe are compared in the point of surface recombination velocity and diode dynamic resistance-voltage characteristics. One surface treatment, named as standard treatment, is only Br-MeOH etching and the other, named as nitric acid (HNO₃) treatment, is composed of chemical oxidation with nitric acid after Br-MeOH etching and the removal of the oxide with ammonium hydroxide. After such surface treatments, gate- controlled diodes were fabricated and surface recombination velocity were measured to be 170 cm/s and 70 cm/s for the standard treatment and nitric acid treatment, respectively. And, the nitric acid treatment diode satisfied BLIP dynamic resistance characteristics regardless of the variation of the gate voltage. Moreover, from the measurement of capacitance- voltage characteristics, it was found that nitric acid treatment reduced the hysteresis width in the C-V curves of ZnS/HgCdTe MIS capacitor by one tenth compared to standard treatment. It is thought that the nitric acid treatment reduces surface-related defect and charge.

Citation Download Citation

Jong Hwa Choi, Hee Chul Lee, and MinSung Choi "Surface treatment effects on the surface recombination velocity of ZnS/HgCdTe interface", Proc. SPIE 4028, Infrared Detectors and Focal Plane Arrays VI, (17 July 2000); https://doi.org/10.1117/12.391752

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available