Modeling the degradation mechanisms of AlGaN-based UV-C LEDs: from injection efficiency to mid-gap state generation

2020 ◽  
Vol 8 (11) ◽  
pp. 1786
Author(s):  
F. Piva ◽  
C. De Santi ◽  
M. Deki ◽  
M. Kushimoto ◽  
H. Amano ◽  
...  
Keyword(s):  
Degradation Mechanisms ◽  
Injection Efficiency ◽  
State Generation ◽  
Uv C ◽  
Gap State

Decrease in the injection efficiency and generation of midgap states in UV-C LEDs: a model based on rate equations

2021 ◽  
Author(s):  
Francesco Piva ◽  
Carlo De Santi ◽  
Matteo Buffolo ◽  
Manato Deki ◽  
Maki Kushimoto ◽  
...  
Keyword(s):  
Rate Equations ◽  
Injection Efficiency ◽  
Model Based ◽  
Uv C

Polyphenols and their antioxidant activity in callus-cultured Malva neglecta cells under UV-B and UV-C irradiation

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
F Ghanati ◽  
F Khatami
Keyword(s):  
Antioxidant Activity ◽  
Uv C

Interexperimental and Interindividual Variations of DNA Repair Capacities After UV-B and UV-C Irradiations of Human Keratinocytes and Fibroblasts

2004 ◽  
Vol 79 (3) ◽  
pp. 286 ◽  
Author(s):  
Marjorie Chazal ◽  
Emeric Roux ◽  
Claire Alapetite ◽  
Christophe Roulin ◽  
Ethel Moustacchi ◽  
...  
Keyword(s):  
Dna Repair ◽  
Human Keratinocytes ◽  
Interindividual Variations ◽  
Uv C

Lithium-ion Battery Degradation Mechanisms and Failure Analysis Methodology

2012 ◽  
Author(s):  
Bhanu Sood ◽  
Lucas Severn ◽  
Michael Osterman ◽  
Michael Pecht ◽  
Anton Bougaev ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Lithium Ion Batteries ◽  
Elevated Temperatures ◽  
Failure Process ◽  
Lithium Ion ◽  
Degradation Mechanisms ◽  
Analysis Methodology ◽  
Depth Of Discharge ◽  
Battery Degradation ◽  
Non Destructive

Abstract A review of the prevalent degradation mechanisms in Lithium ion batteries is presented. Degradation and eventual failure in lithium-ion batteries can occur for a variety of dfferent reasons. Degradation in storage occurs primarily due to the self-discharge mechanisms, and is accelerated during storage at elevated temperatures. The degradation and failure during use conditions is generally accelerated due to the transient power requirements, the high frequency of charge/discharge cycles and differences between the state-of-charge and the depth of discharge influence the degradation and failure process. A step-by-step methodology for conducting a failure analysis of Lithion batteries is presented. The failure analysis methodology is illustrated using a decision-tree approach, which enables the user to evaluate and select the most appropriate techniques based on the observed battery characteristics. The techniques start with non-destructive and non-intrusive steps and shift to those that are more destructive and analytical in nature as information about the battery state is gained through a set of measurements and experimental techniques.

Degradation mechanisms of aluminium diffusion coatings on 12% chromium steels under elevated temperature erosion–oxidation conditions

2006 ◽  
Vol 23 (1) ◽  
pp. 1-11 ◽  
Author(s):  
E. Huttunen-Saarivirta ◽  
F.H. Stott ◽  
V. Rohr ◽  
M. Schütze
Keyword(s):  
Elevated Temperature ◽  
Degradation Mechanisms ◽  
Diffusion Coatings ◽  
Chromium Steels

Design and characterization of a low-optical-loss UV-C laser diode

2020 ◽  
Vol 59 (9) ◽  
pp. 094001 ◽  
Author(s):  
Ziyi Zhang ◽  
Maki Kushimoto ◽  
Tadayoshi Sakai ◽  
Naoharu Sugiyama ◽  
Leo J. Schowalter ◽  
...  
Keyword(s):  
Laser Diode ◽  
Optical Loss ◽  
Uv C

Degradation Mechanisms of Poly(ester urethane) Elastomer

2017 ◽  
Author(s):  
Alexander S. Edgar
Keyword(s):  
Degradation Mechanisms ◽  
Urethane Elastomer

Color of ‘Bengal’ Litchis After Exposure to UV-C Light and Refrigerated Storage

2014 ◽  
Vol 4 (3) ◽  
pp. 183-187
Author(s):  
Karina Furlaneto ◽  
Juliana Ramos ◽  
Érica Daiuto ◽  
Érika Fujita ◽  
Veridiana Mendonca ◽  
...  
Keyword(s):  
Refrigerated Storage ◽  
Uv C

Research on Faulty Insulators’ Degradation Detection in Transformer Substation Based on UV-C Pulse

2018 ◽  
Vol 11 (2) ◽  
pp. 149-152
Author(s):  
Cheng Jiangzhou ◽  
Wang Zhuoyuan ◽  
Wei Yewen ◽  
Sun Jing ◽  
Wang Canxia ◽  
...  
Keyword(s):  
Transformer Substation ◽  
Uv C
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