Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
UV LEDs reliability tests for fluoro-sensing sensor application
Year:2014
Research Areas
  • Electric engineers, electronic and automatic (eil)
Information
Abstract
The use of UV HB-LEDs for fluoro-sensing applications, as detection of substances in water is proposed for replace previous light sources. Developing devices to continuous environmental analysis requires that the used light sources must be robust, economic, and capable to operate correctly for long periods of time during 24 h/day. UV HB-LEDs have improvement over old light sources but need an analysis of reliability for this type of applications. In this paper a reliability analysis of two types of new commercial 3W UV HB-LEDs has been developed, in two different working conditions: continuous and cycled working of 1 min 30sON/30sOFF. Two sets of eleven LEDs at three accelerated temperature are tested. After 1500 h of test at 60 °C, 75 °C and 90 °C, we have not observed catastrophic failures, only LEDs luminosity degradation. The degradation is larger for LEDs working at continuous current than LEDs working at cycled current in all tests.
International
Si
JCR
Si
Title
Microelectronics Reliability
ISBN
0026-2714
Impact factor JCR
1,214
Impact info
Volume
54
Journal number
9-10
From page
2154
To page
2458
Month
SIN MES
Ranking
Participants
  • Autor: F.J. Arques Orbon
  • Autor: Neftali Nuñez Mendoza (UPM)
  • Autor: Manuel Vazquez Lopez (UPM)
  • Autor: Vicente Gonzalez Posadas (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Semiconductores III-V
  • Grupo de Investigación: DIEMAG: Desarrollo e Investigación Electromagnética
  • Departamento: Electrónica Física
  • Centro o Instituto I+D+i: Instituto de Energía Solar
  • Departamento: Teoría de la Señal y Comunicaciones (Provisional)
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)