Liu, BaiquanSharma, ManojYu, JunhongWang, LinShendre, SushantSharma, AshmaIzmir, MerveDelikanlı, SavaşAltıntaş, YemlihaDang, CuongSun, HandongDemir, Hilmi Volkan2023-02-282023-02-282022-05-1826663864http://hdl.handle.net/11693/111949Impurity doping is a promising strategy to afford colloidal nanocrystals exhibiting novel optical, catalytic, and electronic characteristics. However, some significant properties of noble metal-doped nanocrystals (NMD-NCs) remain unknown. Here, we report the electroluminescence (EL) from NMD-NCs. By doping silver impurity into cadmium selenide colloidal quantum wells (CQWs), dual-emission emitters are achieved and a light-emitting diode (LED) with a luminance of 1,339 cd m−2 is reported. In addition, the proposed energy gap engineering to manage exciton recombination is a feasible scheme for tunable EL emissions (e.g., the dopant emission is tuned from 606 to 761 nm). Furthermore, an organic-inorganic hybrid white LED based on CQWs is realized, reaching a color rendering index of 82. Moreover, flexible CQW-LEDs are reported. The findings present a step to unveil the EL property of NMD-NCs, which can be extended to other noble metal impurities, and pave the pathway for NMD-NCs as a class of electronic materials for EL applications. © 2022 The AuthorsEnglishColloidal quantum wellFlexible LEDsLight-emitting diodeNoble metal impurity dopingWhite-lightArticle10.1016/j.xcrp.2022.100860