Color Conversion of GaN-Based Micro Light-Emitting Diodes Using Quantum Dots
Using CdSe/ZnS quantum dots (QDs) excited by the blue light emission of GaN-based micro light-emitting diodes (LEDs), quasi-monochromatic red light sources with emission wavelength of 625 nm were obtained. In order to enhance the blue light emission of GaN-based LEDs for further excitation of QDs, d...
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| Veröffentlicht in: | IEEE photonics technology letters 2015-11, Vol.27 (21), p.2296-2299 |
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| container_title | IEEE photonics technology letters |
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| creator | Lee, Ching-Ting Cheng, Chao-Jung Lee, Hsin-Ying Chu, Ying-Chien Fang, Yen-Hsiang Chao, Chia-Hsin Wu, Ming-Hsien |
| description | Using CdSe/ZnS quantum dots (QDs) excited by the blue light emission of GaN-based micro light-emitting diodes (LEDs), quasi-monochromatic red light sources with emission wavelength of 625 nm were obtained. In order to enhance the blue light emission of GaN-based LEDs for further excitation of QDs, distributed/hybrid Bragg reflectors and zinc oxide (ZnO) nanorod array were, respectively, introduced to the top/bottom and top sides of GaN-based micro LEDs. The presence of ZnO nanorod array helps to channel the blue light to pump the CdSe/ZnS QDs for enhancing the red light emission. The electroluminescence of micro QDs-LEDs with reflectors and ZnO nanorod array was increased by 57.4% compared with the micro QDs-LEDs alone. The international commission on illumination chromaticity coordinate of the micro QDs-LEDs with reflectors and ZnO nanorod array was very close to the red light emission at (0.59, 0.26). |
| doi_str_mv | 10.1109/LPT.2015.2462072 |
| format | Article |
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In order to enhance the blue light emission of GaN-based LEDs for further excitation of QDs, distributed/hybrid Bragg reflectors and zinc oxide (ZnO) nanorod array were, respectively, introduced to the top/bottom and top sides of GaN-based micro LEDs. The presence of ZnO nanorod array helps to channel the blue light to pump the CdSe/ZnS QDs for enhancing the red light emission. The electroluminescence of micro QDs-LEDs with reflectors and ZnO nanorod array was increased by 57.4% compared with the micro QDs-LEDs alone. The international commission on illumination chromaticity coordinate of the micro QDs-LEDs with reflectors and ZnO nanorod array was very close to the red light emission at (0.59, 0.26).</description><subject>Arrays</subject><subject>Cadmium compounds</subject><subject>distributed Bragg reflector</subject><subject>Distributed Bragg reflectors</subject><subject>hybrid Bragg reflector</subject><subject>II-VI semiconductor materials</subject><subject>Light emitting diodes</subject><subject>Micro LEDs</subject><subject>red color conversion</subject><subject>Zinc oxide</subject><subject>zinc-oxide nanorod array</subject><issn>1041-1135</issn><issn>1941-0174</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kEtLxDAUhYMoOI7uBTf5A625eXepnYdCfcHMuqRtMkamjTQdwX9vywyu7rlwzuHwIXQLJAUg2X3xvkkpAZFSLilR9AzNIOOQEFD8fNRk1ABMXKKrGL8IAS4Yn6EiD_vQ4zx0P7aPPnQ4OLw2r8mjibbBL77uAy787nNIlq0fBt_t8MKHxka8jdPzcTDdcGjxIgzxGl04s4_25nTnaLtabvKnpHhbP-cPRVJTyYbEVVVmHbVSA1VGZ1A3WgKlnEmrJVGiMkLYynGlTS2V1o1zXEtaK-pcVTs2R-TYO46Lsbeu_O59a_rfEkg50ShHGuVEozzRGCN3x4i31v7bFWiQSrE_2hNbGg</recordid><startdate>20151101</startdate><enddate>20151101</enddate><creator>Lee, Ching-Ting</creator><creator>Cheng, Chao-Jung</creator><creator>Lee, Hsin-Ying</creator><creator>Chu, Ying-Chien</creator><creator>Fang, Yen-Hsiang</creator><creator>Chao, Chia-Hsin</creator><creator>Wu, Ming-Hsien</creator><general>IEEE</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20151101</creationdate><title>Color Conversion of GaN-Based Micro Light-Emitting Diodes Using Quantum Dots</title><author>Lee, Ching-Ting ; Cheng, Chao-Jung ; Lee, Hsin-Ying ; Chu, Ying-Chien ; Fang, Yen-Hsiang ; Chao, Chia-Hsin ; Wu, Ming-Hsien</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c263t-fbb9ef2e68127a891cd86122436e86075ba55ebf478ac6788dff4862c72ffbcf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Arrays</topic><topic>Cadmium compounds</topic><topic>distributed Bragg reflector</topic><topic>Distributed Bragg reflectors</topic><topic>hybrid Bragg reflector</topic><topic>II-VI semiconductor materials</topic><topic>Light emitting diodes</topic><topic>Micro LEDs</topic><topic>red color conversion</topic><topic>Zinc oxide</topic><topic>zinc-oxide nanorod array</topic><toplevel>online_resources</toplevel><creatorcontrib>Lee, Ching-Ting</creatorcontrib><creatorcontrib>Cheng, Chao-Jung</creatorcontrib><creatorcontrib>Lee, Hsin-Ying</creatorcontrib><creatorcontrib>Chu, Ying-Chien</creatorcontrib><creatorcontrib>Fang, Yen-Hsiang</creatorcontrib><creatorcontrib>Chao, Chia-Hsin</creatorcontrib><creatorcontrib>Wu, Ming-Hsien</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><jtitle>IEEE photonics technology letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Lee, Ching-Ting</au><au>Cheng, Chao-Jung</au><au>Lee, Hsin-Ying</au><au>Chu, Ying-Chien</au><au>Fang, Yen-Hsiang</au><au>Chao, Chia-Hsin</au><au>Wu, Ming-Hsien</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Color Conversion of GaN-Based Micro Light-Emitting Diodes Using Quantum Dots</atitle><jtitle>IEEE photonics technology letters</jtitle><stitle>LPT</stitle><date>2015-11-01</date><risdate>2015</risdate><volume>27</volume><issue>21</issue><spage>2296</spage><epage>2299</epage><pages>2296-2299</pages><issn>1041-1135</issn><eissn>1941-0174</eissn><coden>IPTLEL</coden><abstract>Using CdSe/ZnS quantum dots (QDs) excited by the blue light emission of GaN-based micro light-emitting diodes (LEDs), quasi-monochromatic red light sources with emission wavelength of 625 nm were obtained. In order to enhance the blue light emission of GaN-based LEDs for further excitation of QDs, distributed/hybrid Bragg reflectors and zinc oxide (ZnO) nanorod array were, respectively, introduced to the top/bottom and top sides of GaN-based micro LEDs. The presence of ZnO nanorod array helps to channel the blue light to pump the CdSe/ZnS QDs for enhancing the red light emission. The electroluminescence of micro QDs-LEDs with reflectors and ZnO nanorod array was increased by 57.4% compared with the micro QDs-LEDs alone. The international commission on illumination chromaticity coordinate of the micro QDs-LEDs with reflectors and ZnO nanorod array was very close to the red light emission at (0.59, 0.26).</abstract><pub>IEEE</pub><doi>10.1109/LPT.2015.2462072</doi><tpages>4</tpages></addata></record> |
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| subjects | Arrays Cadmium compounds distributed Bragg reflector Distributed Bragg reflectors hybrid Bragg reflector II-VI semiconductor materials Light emitting diodes Micro LEDs red color conversion Zinc oxide zinc-oxide nanorod array |
| title | Color Conversion of GaN-Based Micro Light-Emitting Diodes Using Quantum Dots |
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