{"id":"CU19416","slug":"structure-and-method-of--CU19416","source":{"id":"CU19416","dataset":"techtransfer","title":"Structure and method of synthesizing tunable light-emitting quantum dots","description_":"<p>This technology is a method of synthesizing light-emitting quantum dots using III-V semiconductor materials. </p>\r\r<h2>Unmet Need: Cadmium-free quantum dots with narrow emission spectra</h2>\r\r<p>Cadmium-free quantum dots must be developed to safely integrate quantum dots into lighting and display technologies. Indium phosphine (InP) is less toxic than cadmium, but InP-based quantum dots typically suffer from broad emission linewidths and poor performance. A method of synthesizing InP-based quantum dots with precise control over size and shape is necessary to achieve narrow linewidths and improve performance.</p>\r\r<h2>The Technology: Structure and fabrication of tunable III-V quantum dots</h2>\r\r<p>This technology is a method of precisely controlling the size and structure of quantum dots made from III-V semiconductor materials. The technology consists of a core-shell geometry, where the light-emitting region consists of one or more group III elements and one or more group V elements followed by a passivation region to produce monodisperse quantum dots with narrow emission spectra. For example, the light emitting region may consist of In<sub>x</sub>Ga<sub>1-X</sub>P. This technology may improve the safety and quality of quantum dots used in lighting and display applications.</p>\r\r<h2>Applications:</h2>\r\r<ul>\r<li>Light-emitting diodes (LEDs)</li>\r<li>Digital displays</li>\r<li>Indoor lighting</li>\r<li>Research tool for synthesis of quantum dots</li>\r</ul>\r\r<h2>Advantages:</h2>\r\r<ul>\r<li>Cadmium-free</li>\r<li>Tunable </li>\r<li>Efficient emission of radiation </li>\r<li>Narrow emission linewidths </li>\r</ul>\r\r<h2>Lead Inventor:</h2>\r\r<p><a href=\"https://www.chem.columbia.edu/content/jonathan-s-owen\">Jonathan Owen, Ph.D.</a></p>\r\r<h2>Patent Information:</h2>\r\r<p>Patent Pending (DE<a href=\"https://patents.google.com/patent/DE112020003015T5/en?oq=DE112020003015\">112020003015</a>)</p>\r\r<h2>Related Publications:</h2>\r\r<ul>\r<li><a href=\"https://pubs.acs.org/doi/10.1021/acs.chemmater.0c01561\">McMurtry BM, Qian K, Teglasi JK, Swarnakar AK, De Roo J, Owen JS. “Continuous nucleation and size dependent growth kinetics of indium phosphide nanocrystals” Chem Mater. 2020 May 26; 32(10): 4358-4368.</a></li>\r</ul>\r\r<h2>Tech Ventures Reference:</h2>\r\r<ul>\r<li><p>IR CU19416</p></li>\r<li><p>Licensing Contact: <a href=\"mailto:techtransfer@columbia.edu\">Greg Maskel</a></p></li>\r</ul>\r","tags":["Cadmium","Dispersity","Electromagnetic radiation","Emission spectrum","Indium","Indium phosphide","Light-emitting diode","Nucleation","Semiconductor"],"file_number":"CU19416","collections":[],"meta_description":"Tunable, cadmium-free III-V quantum dots with core-shell design deliver narrow emission spectra for LEDs, displays, and lighting.","apriori_judge_output":"{\"scores\":{\"novelty\":4.0,\"potential_impact\":4.0,\"readiness\":3.0,\"scalability\":3.0,\"timeliness\":3.0},\"weighted_score\":3.45,\"risks\":[\"Cadmium-free approach may shift performance trade-offs\",\"Patent-pending stage may delay commercialization\",\"Scale-up risk for III-V quantum dots\",\"Safety and regulatory considerations for new material systems\"],\"one_sentence_take\":\"High novelty in cadmium-free, tunable III-V QDs with strong potential, but readiness and scale-up remain moderate and patent/tatent- pending status poses commercialization risk.\"}","inventors":["Anindya Swarnaker","Brandon McMurtry","Jonathan Owen","Joseph Treadway","Madis Raukas","Maria Anc"],"manager":"Greg Maskel","depts":["Chemistry"],"divs":["Faculty of the Arts & Sciences"],"date_released":"2026-10-23"},"highlight":{},"matched_queries":null,"score":0.0}