Analysis of the Forward I–V Characteristics of Al-Implanted 4H-SiC p-i-n Diodes with Modeling of Recombination and Trapping Effects Due to Intrinsic and Doping-Induced Defect States
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Electronic Materials"
DOI: 10.1007/s11664-017-5916-8
Abstract: In this paper, the impact of silicon carbide intrinsic defect states, such as Z1/2 and EH6/7 centers, on the forward current–voltage curves of aluminum (Al)-implanted 4H-SiC p-i-n diodes is investigated by means of a physics-based… read more here.
Keywords: defect states; analysis forward; characteristics implanted; sic diodes ... See more keywords
Defect states induced luminescence and electrochemical studies of boron carbon nitride nanosheets
Sign Up to like & getrecommendations! Published in 2021 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2021.149982
Abstract: Abstract A single-step thermochemical synthesis route for boron carbon nitride (BCN) has been reported in this work. X-ray photoelectron spectroscopy (XPS) shows that B, C, and N atoms are atomically intermixed with the dominance of… read more here.
Keywords: boron carbon; spectroscopy; defect states; band ... See more keywords
Revisiting the Neutral C-Vacancy in Diamond: Localization of Electrons through DFT+U
Sign Up to like & getrecommendations! Published in 2017 at "Diamond and Related Materials"
DOI: 10.1016/j.diamond.2017.08.009
Abstract: Abstract The neutral C-vacancy is investigated using density functional theory calculations. We show that local functionals, such as PBE, can predict the correct stability order of the different spin states, and that the success of… read more here.
Keywords: neutral vacancy; defect states; vacancy diamond; diamond ... See more keywords
Defect states and temperature stability of Eu 2+ center in Eu-doped yttrium aluminum garnet
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2017.05.065
Abstract: Abstract We study defect states in Eu-doped Y 3 Al 5 O 12 powder by thermally stimulated luminescence (TSL) in the temperature range 77–500 K. We identify the main TSL peaks, analyze them by the initial… read more here.
Keywords: states temperature; defect states; temperature stability; stability center ... See more keywords
Diffuse reflectance spectroscopy: An effective tool to probe the defect states in wide band gap semiconducting materials
Sign Up to like & getrecommendations! Published in 2018 at "Materials Science in Semiconductor Processing"
DOI: 10.1016/j.mssp.2018.06.025
Abstract: Abstract Optical properties of widely used semiconducting oxides namely; TiO2, ZnO and ZrO2 were investigated using diffuse reflectance spectroscopy (DRS). Prior to the optical absorption measurements, the structural purity of these samples was examined using… read more here.
Keywords: defect states; reflectance spectroscopy; band gap; spectroscopy ... See more keywords
Determination of defect states and surface photovoltage in PTB7:PC71BM based bulk heterojunction solar cells
Sign Up to like & getrecommendations! Published in 2021 at "Solar Energy Materials and Solar Cells"
DOI: 10.1016/j.solmat.2021.110994
Abstract: Abstract Defects formed during the device processing acts as recombination centers and shows adverse effects on the photovoltaic performance of the organic solar cells (OSCs). In this manuscript, a study on the effect of defect… read more here.
Keywords: bulk heterojunction; ptb7 pc71bm; solar cells; defect states ... See more keywords
Character of defect states in vacancy-doped MoTe2 monolayer: Spatial localization, flat bands and hybridization gap
Sign Up to like & getrecommendations! Published in 2019 at "Superlattices and Microstructures"
DOI: 10.1016/j.spmi.2019.04.044
Abstract: Abstract The structural and electronic properties of vacancy-doped 1H and 1T′ MoTe2 monolayers are systematically investigated based on first-principles calculations. Te vacancy is found energetically favored over Mo vacancy for both phases, and Te double… read more here.
Keywords: vacancy doped; defect states; flat bands; vacancy ... See more keywords
Photophysics of Localized Deep Defect States in Hybrid Organic–Inorganic Perovskites
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.1c01150
Abstract: Hybrid organic–inorganic halide perovskites have sub-band-gap absorption and photocurrent spectra which are difficult to explain using existing models, particularly in light of the small Urbach ene... read more here.
Keywords: hybrid organic; localized deep; photophysics localized; defect states ... See more keywords
Mapping the Energetics of Defect States in Cu2ZnSnS4 films and the Impact of Sb Doping
Sign Up to like & getrecommendations! Published in 2022 at "ACS Applied Energy Materials"
DOI: 10.1021/acsaem.1c03729
Abstract: The sub-bandgap levels associated with defect states in Cu2ZnSnS4 (CZTS) thin films are investigated by correlating the temperature dependence of the absorber photoluminescence (PL) with the device admittance spectroscopy. CZTS thin films are prepared by… read more here.
Keywords: impact doping; mapping energetics; energetics defect; defect states ... See more keywords
Origin of highly efficient photoluminescence in AgIn5S8 nanoparticles.
Sign Up to like & getrecommendations! Published in 2017 at "Nanoscale"
DOI: 10.1039/c7nr02380d
Abstract: The photoluminescence of AgIn5S8 nanoparticles was examined to clarify the emissive relaxation processes of defect states and to explain the highly efficient photoluminescence of defect states. The large Stokes shift of the defect emission was… read more here.
Keywords: defect states; photoluminescence agin5s8; agin5s8 nanoparticles; photoluminescence ... See more keywords
Enhancement of polaron-hopping-based a.c. conduction in semiconducting STS (Se-Te-Sn) glass by silver incorporation.
Sign Up to like & getrecommendations! Published in 2018 at "Dalton transactions"
DOI: 10.1039/c8dt00717a
Abstract: In the present work, we have synthesized novel Se78-xAgxTe20Sn2 (0 ≤ x ≤ 6) semiconducting glasses for improving thermally activated a.c. conduction in STS glass (x = 0). The results of the experimental analysis of… read more here.
Keywords: defect states; sts glass; enhancement polaron; silver incorporation ... See more keywords