Hybridization of CdSe/ZnS Quantum Dots on InGaN/GaN Multiple Quantum Well Light-Emitting Diodes for Pink Light Emission
Pink light emission has been demonstrated from the hybrid CdSe/ZnS quantum dot-InGaN/GaN quantum well light-emitting diodes (LEDs). The QDs in toluene are blended in the resin matrix to become the nanophosphor. For the fabricated hybrid LED, it is found the light output power is greatly reduced due...
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| creator | Chun-Yuan Huang Yan-Kuin Su Ying-Chih Chen Cheng-Tien Wan |
| description | Pink light emission has been demonstrated from the hybrid CdSe/ZnS quantum dot-InGaN/GaN quantum well light-emitting diodes (LEDs). The QDs in toluene are blended in the resin matrix to become the nanophosphor. For the fabricated hybrid LED, it is found the light output power is greatly reduced due to the poor quantum yield (QY) of QDs ( |
| doi_str_mv | 10.1109/IPGC.2008.4781324 |
| format | Conference Proceeding |
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The QDs in toluene are blended in the resin matrix to become the nanophosphor. For the fabricated hybrid LED, it is found the light output power is greatly reduced due to the poor quantum yield (QY) of QDs (<50%). Besides, the comparison of the electroluminescence (EL) spectra of the InGaN blue LED and the hybrid pink LED exhibit over 90% of the blue light centered at 448 nm has been down-converted to the red light at 636 nm. Consequently, purplish pink light with CIE-1931 chromaticity coordinates of (0.374, 0.147) is obtained. Also observed is the significant blue-shift of luminescence peak from QD-resin composite with respect to the photoluminescence peak from QD-toluene solution, which is due to the less attack of reabsorption of photon energies from smaller to larger QDs rather than the Forster energy transfer. The current-dependent and temperature-dependent EL spectra are also characterized to evaluate the thermal stability of our hybrid LED. In this demonstration, CdSe/ZnS QDs with different sizes/colors can be used as nanophosphors to fabricate color-converted LEDs. Nevertheless, QDs with higher QYs or more efficient device packagings should be adopted to improve the device efficiency.</description><identifier>ISBN: 1424429056</identifier><identifier>ISBN: 9781424429059</identifier><identifier>ISBN: 1424439019</identifier><identifier>ISBN: 9781424439010</identifier><identifier>EISBN: 9781424429066</identifier><identifier>EISBN: 1424429064</identifier><identifier>DOI: 10.1109/IPGC.2008.4781324</identifier><identifier>LCCN: 2008908071</identifier><language>eng</language><publisher>IEEE</publisher><subject>Electroluminescence ; Energy exchange ; Gallium nitride ; Light emitting diodes ; Luminescence ; Photoluminescence ; Power generation ; Quantum dots ; Resins ; Zinc compounds</subject><ispartof>2008 IEEE PhotonicsGlobal@Singapore, 2008, p.1-3</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/4781324$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,776,780,785,786,2051,27904,54899</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/4781324$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Chun-Yuan Huang</creatorcontrib><creatorcontrib>Yan-Kuin Su</creatorcontrib><creatorcontrib>Ying-Chih Chen</creatorcontrib><creatorcontrib>Cheng-Tien Wan</creatorcontrib><title>Hybridization of CdSe/ZnS Quantum Dots on InGaN/GaN Multiple Quantum Well Light-Emitting Diodes for Pink Light Emission</title><title>2008 IEEE PhotonicsGlobal@Singapore</title><addtitle>IPGC</addtitle><description>Pink light emission has been demonstrated from the hybrid CdSe/ZnS quantum dot-InGaN/GaN quantum well light-emitting diodes (LEDs). The QDs in toluene are blended in the resin matrix to become the nanophosphor. For the fabricated hybrid LED, it is found the light output power is greatly reduced due to the poor quantum yield (QY) of QDs (<50%). Besides, the comparison of the electroluminescence (EL) spectra of the InGaN blue LED and the hybrid pink LED exhibit over 90% of the blue light centered at 448 nm has been down-converted to the red light at 636 nm. Consequently, purplish pink light with CIE-1931 chromaticity coordinates of (0.374, 0.147) is obtained. Also observed is the significant blue-shift of luminescence peak from QD-resin composite with respect to the photoluminescence peak from QD-toluene solution, which is due to the less attack of reabsorption of photon energies from smaller to larger QDs rather than the Forster energy transfer. The current-dependent and temperature-dependent EL spectra are also characterized to evaluate the thermal stability of our hybrid LED. In this demonstration, CdSe/ZnS QDs with different sizes/colors can be used as nanophosphors to fabricate color-converted LEDs. Nevertheless, QDs with higher QYs or more efficient device packagings should be adopted to improve the device efficiency.</description><subject>Electroluminescence</subject><subject>Energy exchange</subject><subject>Gallium nitride</subject><subject>Light emitting diodes</subject><subject>Luminescence</subject><subject>Photoluminescence</subject><subject>Power generation</subject><subject>Quantum dots</subject><subject>Resins</subject><subject>Zinc compounds</subject><isbn>1424429056</isbn><isbn>9781424429059</isbn><isbn>1424439019</isbn><isbn>9781424439010</isbn><isbn>9781424429066</isbn><isbn>1424429064</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2008</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo9kNtKw0AQhlekoK15APFmXyDNHiaHvZS0toGolRYEb8om2dTVHEp2i9Snd6XVGYZ_hu9nBgahW0qmlBIRZKtFOmWEJFOIE8oZXCBPuA4YABMkii7R-G8IoxEa_3oFSUhMr5BnzAdxASFnVFyjr-WxGHSlv6XVfYf7GqfVWgVv3Rq_HGRnDy2e9dZgx7JuIZ8CV_jx0Fi9b9S_5VU1Dc717t3681Zbq7sdnum-UgbX_YBXuvs8YeywMe7SDRrVsjHKO-sEbR7mm3Tp58-LLL3PfS2I9euYJCEoqeKqCAFq4JEsZRlSHkeSQ5SEtFKFAsoYOFAVwqVMCs5jKOqS8wm6O63VSqntftCtHI7b89_4DwdcX5U</recordid><startdate>200812</startdate><enddate>200812</enddate><creator>Chun-Yuan Huang</creator><creator>Yan-Kuin Su</creator><creator>Ying-Chih Chen</creator><creator>Cheng-Tien Wan</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200812</creationdate><title>Hybridization of CdSe/ZnS Quantum Dots on InGaN/GaN Multiple Quantum Well Light-Emitting Diodes for Pink Light Emission</title><author>Chun-Yuan Huang ; Yan-Kuin Su ; Ying-Chih Chen ; Cheng-Tien Wan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i90t-f70854eae7db544f436acac51376a346851debe41224acadb9b9ba8b3374bfc33</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Electroluminescence</topic><topic>Energy exchange</topic><topic>Gallium nitride</topic><topic>Light emitting diodes</topic><topic>Luminescence</topic><topic>Photoluminescence</topic><topic>Power generation</topic><topic>Quantum dots</topic><topic>Resins</topic><topic>Zinc compounds</topic><toplevel>online_resources</toplevel><creatorcontrib>Chun-Yuan Huang</creatorcontrib><creatorcontrib>Yan-Kuin Su</creatorcontrib><creatorcontrib>Ying-Chih Chen</creatorcontrib><creatorcontrib>Cheng-Tien Wan</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chun-Yuan Huang</au><au>Yan-Kuin Su</au><au>Ying-Chih Chen</au><au>Cheng-Tien Wan</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Hybridization of CdSe/ZnS Quantum Dots on InGaN/GaN Multiple Quantum Well Light-Emitting Diodes for Pink Light Emission</atitle><btitle>2008 IEEE PhotonicsGlobal@Singapore</btitle><stitle>IPGC</stitle><date>2008-12</date><risdate>2008</risdate><spage>1</spage><epage>3</epage><pages>1-3</pages><isbn>1424429056</isbn><isbn>9781424429059</isbn><isbn>1424439019</isbn><isbn>9781424439010</isbn><eisbn>9781424429066</eisbn><eisbn>1424429064</eisbn><abstract>Pink light emission has been demonstrated from the hybrid CdSe/ZnS quantum dot-InGaN/GaN quantum well light-emitting diodes (LEDs). The QDs in toluene are blended in the resin matrix to become the nanophosphor. For the fabricated hybrid LED, it is found the light output power is greatly reduced due to the poor quantum yield (QY) of QDs (<50%). Besides, the comparison of the electroluminescence (EL) spectra of the InGaN blue LED and the hybrid pink LED exhibit over 90% of the blue light centered at 448 nm has been down-converted to the red light at 636 nm. Consequently, purplish pink light with CIE-1931 chromaticity coordinates of (0.374, 0.147) is obtained. Also observed is the significant blue-shift of luminescence peak from QD-resin composite with respect to the photoluminescence peak from QD-toluene solution, which is due to the less attack of reabsorption of photon energies from smaller to larger QDs rather than the Forster energy transfer. The current-dependent and temperature-dependent EL spectra are also characterized to evaluate the thermal stability of our hybrid LED. In this demonstration, CdSe/ZnS QDs with different sizes/colors can be used as nanophosphors to fabricate color-converted LEDs. Nevertheless, QDs with higher QYs or more efficient device packagings should be adopted to improve the device efficiency.</abstract><pub>IEEE</pub><doi>10.1109/IPGC.2008.4781324</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | ISBN: 1424429056 |
| ispartof | 2008 IEEE PhotonicsGlobal@Singapore, 2008, p.1-3 |
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| language | eng |
| recordid | cdi_ieee_primary_4781324 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Electroluminescence Energy exchange Gallium nitride Light emitting diodes Luminescence Photoluminescence Power generation Quantum dots Resins Zinc compounds |
| title | Hybridization of CdSe/ZnS Quantum Dots on InGaN/GaN Multiple Quantum Well Light-Emitting Diodes for Pink Light Emission |
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