Back to Search

Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems

Title	Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems
Author	Yuruker, Sevket Umut, Arık, Mehmet, Tamdoğan, Enes, Melikov, R., Nizamoğlu, Sedat, Press, D. A., Durak, Ilkem
Publication Date:	2015
Publication Place	- ASME
Subject	Cavities, Proteins
Type	Document
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	978-0-7918-5690-1
Record ID	4062e923-7d2a-4791-8ac5-cab15a96582a
Library Location	Mechanical Engineering
Date	2015
Sample Text	The demand for high power LEDs for illumination applications is increasing. LED package encapsulation is one of most critical materials that affect the optical path of the generated light by LEDs, and may result in lumen degradation. A typical encapsulation material is a mixture of phosphor and a polymer based binder such as silicone. After LED chips are placed at the base of a cavity, phosphor particles are mixed with silicone and carefully placed into the cavity. One of the important technical challenges is to ensure a better thermal conductivity than 0.2 W/m-K of current materials for most of the traditional polymers in SSL applications. In this study, we investigated an unconventional material of the silk fibroin proteins for LED applications, and showed that this biomaterial provides thermal advantages leading to an order of magnitude higher thermal performance than conventional silicones. Silk fibroin is a natural protein and directly extracted from silk cocoons produced by Bombyx mori silkworm. Therefore, it presents a “green” material for photonic applications with its superior properties of biocompatibility and high optical transparency with a minimal absorption. Combining these properties with high thermal performance makes this biomaterial promising for future LED applications. An experimental and computational study to understand the optical and thermal performance is performed. A computational fluid dynamics study with a commercial CFD software was performed and an experimental set-up was developed to validate the computational findings to determine the thermal conductivity of the proposed material.
DOI	10.1115/IPACK2015-48326
Cilt	3

View in source Özyeğin University Özyeğin University - Historical works, archives, and periodicals search engine

Özyeğin University

Thermal and optical performance of eco-friendly silk fibroin proteins as a cavity encapsulation over LED systems

Author Yuruker, Sevket Umut, Arık, Mehmet, Tamdoğan, Enes, Melikov, R., Nizamoğlu, Sedat, Press, D. A., Durak, Ilkem

Publication Date 2015

Publication Place - ASME

Subject Cavities, Proteins

Type Document

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 978-0-7918-5690-1

Record ID 4062e923-7d2a-4791-8ac5-cab15a96582a

Library Location Mechanical Engineering

Date 2015

Sample Text The demand for high power LEDs for illumination applications is increasing. LED package encapsulation is one of most critical materials that affect the optical path of the generated light by LEDs, and may result in lumen degradation. A typical encapsulation material is a mixture of phosphor and a polymer based binder such as silicone. After LED chips are placed at the base of a cavity, phosphor particles are mixed with silicone and carefully placed into the cavity. One of the important technical challenges is to ensure a better thermal conductivity than 0.2 W/m-K of current materials for most of the traditional polymers in SSL applications. In this study, we investigated an unconventional material of the silk fibroin proteins for LED applications, and showed that this biomaterial provides thermal advantages leading to an order of magnitude higher thermal performance than conventional silicones. Silk fibroin is a natural protein and directly extracted from silk cocoons produced by Bombyx mori silkworm. Therefore, it presents a “green” material for photonic applications with its superior properties of biocompatibility and high optical transparency with a minimal absorption. Combining these properties with high thermal performance makes this biomaterial promising for future LED applications. An experimental and computational study to understand the optical and thermal performance is performed. A computational fluid dynamics study with a commercial CFD software was performed and an experimental set-up was developed to validate the computational findings to determine the thermal conductivity of the proposed material.

DOI 10.1115/IPACK2015-48326

Cilt 3