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

Title

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

 Author

Koladouz Esfahani, Z. (TU Delft Electronic Components, Technology and Materials)
Rostamian, Ali (University of Tehran)
Kolahdouz, Mohammadreza (University of Tehran)
Ma, Teng
van Zeijl, H.W. (TU Delft EKL Processing)
Zhang, Kouchi (TU Delft Electronic Components, Technology and Materials) ORCID 0000-0002-8023-5170

 Date

2016

 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.

 Subject

Photodetectors
Optoelectronics

 To reference this document use:

http://resolver.tudelft.nl/uuid:eaefff1f-b20c-40c0-ae05-17385ce64899

 DOI

https://doi.org/10.1364/OE.24.003216

 ISSN

1094-4087

 Source

Optics Express, 24 (4), 3216-3229

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2016 Z. Koladouz Esfahani, Ali Rostamian, Mohammadreza Kolahdouz, Teng Ma, H.W. van Zeijl, Kouchi Zhang
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