{"id":204,"date":"2020-11-05T00:39:46","date_gmt":"2020-11-05T05:39:46","guid":{"rendered":"https:\/\/www.cd-bioparticles.com\/blog\/?p=204"},"modified":"2021-10-09T02:15:32","modified_gmt":"2021-10-09T07:15:32","slug":"a-fascinating-behind-the-scenes-look-at-electroluminescent-quantum-dots","status":"publish","type":"post","link":"https:\/\/www.cd-bioparticles.com\/blog\/quantum-dots\/a-fascinating-behind-the-scenes-look-at-electroluminescent-quantum-dots\/","title":{"rendered":"A Fascinating Behind-the-Scenes Look at Electroluminescent Quantum Dots"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"\/blog\/wp-content\/uploads\/2020\/11\/A-Fascinating-Behind-the-Scenes-Look-at-Electroluminescent-Quantum-Dots-1-1024x576.jpg\" alt=\"\" class=\"wp-image-205\" srcset=\"\/blog\/wp-content\/uploads\/2020\/11\/A-Fascinating-Behind-the-Scenes-Look-at-Electroluminescent-Quantum-Dots-1-1024x576.jpg 1024w, \/blog\/wp-content\/uploads\/2020\/11\/A-Fascinating-Behind-the-Scenes-Look-at-Electroluminescent-Quantum-Dots-1-300x169.jpg 300w, \/blog\/wp-content\/uploads\/2020\/11\/A-Fascinating-Behind-the-Scenes-Look-at-Electroluminescent-Quantum-Dots-1-768x432.jpg 768w, \/blog\/wp-content\/uploads\/2020\/11\/A-Fascinating-Behind-the-Scenes-Look-at-Electroluminescent-Quantum-Dots-1.jpg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/div>\n\n\n\n<p><strong>What are quantum dots?<\/strong><\/p>\n\n\n\n<p>Quantum dots(QDs) are tiny particles in crystalline\nsemiconductor materials, with sizes of a few nm, usually 2-10 nanometers in\ndiameter. This is the size of a large molecule, although it&#8217;s smaller than DNA.\nThey\u2019re usually made up of hundreds or thousands of atoms in a rigid lattice.\nThese semiconductor particles are magical particles and are the hottest topic\ndiscussed in the display technology field in a very long time. As they can emit\nlight of a specific wavelength when an electric current is applied or exposed\nto light. Besides, this emission wavelength can be adjusted by changing the\nsize, shape, material, or doping quantum dots. <\/p>\n\n\n\n<p>Typically, smaller <a href=\"https:\/\/www.cd-bioparticles.com\/product\/quantum-dots-list-169.html\">quantum dots<\/a>, such as\n2-3 nm, can emit light with a shorter wavelength (blue-green spectrum region),\nwhile larger quantum dots, with 5-6 nm, can emit light with a longer wavelength\n(orange, red). In addition, their fluorescence lifetime is also related to\ntheir particle sizes. For larger quantum dots, their life cycle is longer\nbecause the electron-hole pairs can be captured at more closely spaced energy\nlevels.<\/p>\n\n\n\n<p><strong>Electroluminescent quantum dots<\/strong><\/p>\n\n\n\n<p>QD light-emitting diodes (LEDs) are a kind of\nlight-emitting device technology and is considered as the next generation of\ndisplay technology after organic light-emitting diode display. As QD-LEDs are\norganic light-emitting diodes with high brightness, high efficiency, long life,\nflexibility, high quality and low processing cost. <\/p>\n\n\n\n<p>As QD-LEDs are suitable for manufacturing via the coating\nprocess, they are also expected to reduce the manufacturing cost for larger\nscreens. A typical QD material is Cd-based QDs. Cd-based quantum-dot\nlight-emitting diodes have been extensively explored for applications in\ndisplay and lighting.<\/p>\n\n\n\n<p><strong>Red, blue, and green?<\/strong><\/p>\n\n\n\n<p>Quantum dots for light-emitting diodes have been regarded as one of the promising light sources in display applications due to their excellent color saturation, high brightness, spectral tunability and low processing cost. So far, the performance of red and green QD-LEDs has been significantly improved by optimizing the structure of QD materials and devices and further understanding of their luminescence mechanism. <\/p>\n\n\n\n<p>For instance, CD Bioparticles DiagNano\u2122 Cd-Based QDs\ncan exhibit high external quantum efficiency (EQE), the EQEs of red- (R-),\ngreen- (G-), and blue- (B-) QLEDs are higher than 18%, 15% and 8%,\nrespectively. To be more specific, the Red-emitting InP\/ZnS quantum dots are\nstabilized with oleylamine in n-octane, PL 630\u00b110 nm, FWHM (nm)~45 nm, Max EQE\n~15%; green-emitting InP\/ZnS quantum dots are stabilized with oleylamine in\nn-octane, PL 525\u00b110 nm, FWHM (nm)~37 nm, Max EQE ~10%; and blue-emitting\nInP\/ZnS quantum dots, stabilized with dodecanethiol in n-octane, PL 470\u00b110 nm,\nFWHM (nm)&lt;45 nm, Max EQE ~1%.<\/p>\n\n\n\n<p>About the author: With years of experience in the pharmaceutical and life science sector, CD Bioparticles now provides a comprehensive list of DiagNano\u2122 semiconductor quantum dots with different chemical compositions and surface functionalization. These quantum dots have uniform size, tunable emission and high quantum yield, as well as good thermal stability. Furthermore, a series of <a href=\"https:\/\/www.cd-bioparticles.com\/products\/electroluminescent-quantum-dots-electroluminescence-for-efficient-light-emitting-diodes.html\">electroluminescent quantum dots<\/a> for light-emitting diodes are also available at CD Bioparticles now. Please do not hesitate to contact  CD Bioparticles if you need free consultation and a detailed quotation of your project. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>What are quantum dots? Quantum dots(QDs) are tiny particles in crystalline semiconductor materials, with sizes of a few nm, usually<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[53,54,10],"class_list":["post-204","post","type-post","status-publish","format-standard","hentry","category-quantum-dots","tag-cd-based-qds","tag-electroluminescent-quantum-dots","tag-quantum-dots"],"_links":{"self":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/comments?post=204"}],"version-history":[{"count":2,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/204\/revisions"}],"predecessor-version":[{"id":332,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/204\/revisions\/332"}],"wp:attachment":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/media?parent=204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/categories?post=204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/tags?post=204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}