Output blue light evaluation for phosphor based smart white LED wafer level packages

Journal Article (2016)
Author(s)

Z Koladouz Esfahani (TU Delft - Electronic Components, Technology and Materials)

Ali Rostamian (University of Tehran)

Mohammadreza Kolahdouz (University of Tehran)

Teng Ma

Henk van Zeijl (TU Delft - EKL Processing)

Guo Qi Zhang (TU Delft - Electronic Components, Technology and Materials)

Research Group
Electronic Components, Technology and Materials
Copyright
© 2016 Z. Koladouz Esfahani, Ali Rostamian, Mohammadreza Kolahdouz, Teng Ma, H.W. van Zeijl, Kouchi Zhang
DOI related publication
https://doi.org/10.1364/OE.24.003216
More Info
expand_more
Publication Year
2016
Language
English
Copyright
© 2016 Z. Koladouz Esfahani, Ali Rostamian, Mohammadreza Kolahdouz, Teng Ma, H.W. van Zeijl, Kouchi Zhang
Research Group
Electronic Components, Technology and Materials
Issue number
4
Volume number
24
Pages (from-to)
3216-3229
Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Abstract

This study presents a blue light detector for evaluating the output light of phosphor based white LED package. It is composed of a silicon stripe-shaped photodiode designed and implemented in a 2 μm BiCMOS process which can be used for wafer level integration of different passive and active devices all in just 5 lithography steps. The final device shows a high selectivity to blue light. The maximum responsivity at 480nm is matched with the target blue LED illumination. The designed structure have better responsivity compared to simple photodiode structure due to reducing the effect of dead layer formation close to the surface because of implantation. It has also a two-fold increase in the responsivity and quantum efficiency compared to previously similar published sensors.

Files

11510951.pdf
(pdf | 3.04 Mb)
License info not available