Wepfer, Svenja Frohleiks, Julia Hong, A-Ra Jang, Ho Seong Bacher, Gerd Nannen, Ekaterina 2024-01-20T02:01:13Z 2024-01-20T02:01:13Z 2021-09-01 2017-03-29 1944-8244 https://pubs.kist.re.kr/handle/201004/122934 Colloidal quantum dots (QDs) are attractive candidates for future lighting technology. However, in contrast to display applications, the realization of balanced white lighting devices remains conceptually challenging. Here, we demonstrate two-component white light-emitting QD-LEDs with high color rendering indices (CRI) up to 78. The implementation of orange CuInS2/ZnS (CIS/ZnS) QDs with a broad emission and high quantum yield together with blue ZnCdSe/ZnS QDs in a mixed approach allowed white light emission with low blue QD content. The devices reveal only a small color drift in a wide operation voltage range. The correlated color temperature (CCT) could be adjusted between 2200 and 7200 K (from warm white to cold white) by changing the volume ratio between orange and blue QDs (1:0.5 and 1:2). English American Chemical Society LIGHT-EMITTING-DIODES QUANTUM DOTS SEMICONDUCTOR NANOCRYSTALS HIGHLY EFFICIENT ENERGY-TRANSFER BRIGHT ELECTROLUMINESCENCE GREEN YELLOW PHOTOLUMINESCENCE Solution-Processed CuInS2-Based White QD-LEDs with Mixed Active Layer Architecture Article 10.1021/acsami.6b15660 1 ACS Applied Materials & Interfaces, v.9, no.12, pp.11224 - 11230 ACS Applied Materials & Interfaces 9 12 11224 11230 scie scopus 000398246900101 2-s2.0-85016607970 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article LIGHT-EMITTING-DIODES QUANTUM DOTS SEMICONDUCTOR NANOCRYSTALS HIGHLY EFFICIENT ENERGY-TRANSFER BRIGHT ELECTROLUMINESCENCE GREEN YELLOW PHOTOLUMINESCENCE quantum dots white light-emitting devices mixed layer core/shell