Surface photovoltage spectroscopy of semiconductor materials for optoelectronic applications

V Donchev - Materials Research Express, 2019 - iopscience.iop.org
The present contribution reviews the basic principles of the surface photovoltage (SPV)
spectroscopy in the metal-insulator-semiconductor operation mode emphasizing on the …

X-Ray-Induced Modification of the Photophysical Properties of MAPbBr3 Single Crystals

G Armaroli, L Ferlauto, F Lédée, M Lini… - … applied materials & …, 2021 - ACS Publications
Methylammonium lead tribromide (MAPbBr3) perovskite single crystals demonstrate to be
excellent direct X-ray and gamma-ray detectors with outstanding sensitivity and low limit of …

Effect of two-step growth process on structural, optical and electrical properties of MOVPE-grown GaP/Si

VK Dixit, T Ganguli, TK Sharma, SD Singh… - Journal of Crystal …, 2008 - Elsevier
A two-step growth process of gallium phosphide (GaP) epilayer on silicon substrate is
carried out using metal organic vapor-phase epitaxy (MOVPE). This process includes the …

Band structure properties of novel BxGa1− xP alloys for silicon integration

N Hossain, TJC Hosea, SJ Sweeney… - Journal of Applied …, 2011 - pubs.aip.org
We have grown and investigated the band-structure properties of novel III-V alloys based
upon B x Ga 1− x P. These layers are utilized as strain-compensating layers for the lattice …

Automated system for surface photovoltage spectroscopy

Y González, A Abelenda, O De Melo… - Review of Scientific …, 2021 - pubs.aip.org
This paper details the development of a lab-made experimental setup for surface
photovoltage spectroscopy (SPS) measurements using an open-source and Arduino® …

A correlation between the defect states and yellow luminescence in AlGaN/GaN heterostructures

D Jana, TK Sharma - Journal of Applied Physics, 2017 - pubs.aip.org
AlGaN/GaN heterostructures are investigated by performing complementary spectroscopic
measurements under novel experimental configurations. Distinct features related to the …

Studies on MOVPE growth of GaP epitaxial layer on Si (0 0 1) substrate and effects of annealing

VK Dixit, T Ganguli, TK Sharma, R Kumar… - Journal of crystal …, 2006 - Elsevier
Growth of gallium phosphide layer on silicon substrate has been carried out using metal-
organic vapor phase epitaxy. Epitaxial layers were grown at 845° C with a V/III ratio of 100 …

Surface photovoltage studies of and quantum well structures

G Dumitras, H Riechert, H Porteanu, F Koch - Physical Review B, 2002 - APS
Surface photovoltage in GaAs-based type I strained quantum well structures is discussed.
First, a model for the photovoltage generation in our samples is presented. Then surface …

Absorption edge determination of thick GaAs wafers using surface photovoltage spectroscopy

TK Sharma, S Porwal, R Kumar… - Review of scientific …, 2002 - pubs.aip.org
A procedure for choosing the appropriate chopping frequency (f) for the surface
photovoltage spectroscopy (SPS) measurements in order to obtain the absorption related …

Frequency and intensity dependence of the sub-band-gap features observed in the surface photovoltage spectrum of semi-insulating GaAs

TK Sharma, S Kumar, KC Rustagi - Journal of applied physics, 2002 - pubs.aip.org
Semi-insulating (SI), undoped GaAs is an important material, which is commonly used as a
substrate for the high performance integrated circuits as well as for epitaxial growth for many …