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Improvement of high-power-white-LED lamp performance by liquid injection
Roffi T.M.a, Idris I.a, Uchida K.b, Nozaki S.b, Sugiyama N.c, Morisaki H.c, Soelami F.X.N.a
a Electrical Engineering, Institut Teknologi Bandung, Indonesia
b Electronics Engineering, University of Electro, Communications, Japan
c Nanoteco Corp., Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Performance of a high-power-white-LED lamp is mostly hindered by its poor thermal characteristic. This characteristic is accessed by its thermal resistance. Besides thermal characteristic, light quality of a high-power-white-LED lamp is also an important issue. This parameter is accessed by its luminous efficiency. Both thermal characteristic and light quality need to be optimized in order to develop a high-power-white-LED lamp. In this study we made an attempt to improve the characteristic features (both the thermal resistance and luminous efficiency) of a high-power-white-LED lamp by liquid injection in the lamp package. Experiments were carried out on a highpower- white-LED lamp consisting of 5 blue LED chips, 5 phosphor-epoxy layers and 3M Fluorinert FC-43 as an injected liquid. Furthermore, the light extraction with the total internal reflection was simulated to confirm the improvement by liquid injection. It is found from the experimental results that liquid injection has significantly improved the thermal dissipation of the lamp with the decreased thermal resistance by 14 %. It has also improved the lamps light quality with the increase in the luminous efficiency by 18 %. © 2011 IEEE.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Internal reflections,Lamp package,liquid injection,Luminous efficiency,White LED[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]internal reflection,lamp package,liquid injection,luminous efficiency,thermal resistance,white LED[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1109/ICEEI.2011.6021601[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]