| Title | Engineering triangular carbon quantum dots with unprecedented narrow bandwidth emission for multicolored LEDs |
| Authors | Yuan, Fanglong Yuan, Ting Sui, Laizhi Wang, Zhibin Xi, Zifan Li, Yunchao Li, Xiaohong Fan, Louzhen Tan, Zhan'ao Chen, Anmin Jin, Mingxing Yang, Shihe |
| Affiliation | Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China. Jilin Univ, Inst Atom & Mol Phys, Changchun 130012, Jilin, Peoples R China. Chinese Acad Sci, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China. North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Sch Renewable Energy, Beijing 102206, Peoples R China. Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China. Peking Univ, Guangdong Key Lab Nanomicro Mat Res, Sch Chem Biol & Biotechnol, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China. Beijing Normal Univ, Coll Chem, Beijing 100875, Peoples R China. Tan, ZA (reprint author), North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Sch Renewable Energy, Beijing 102206, Peoples R China. Tan, ZA (reprint author), Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China. Yang, SH (reprint author), Peking Univ, Guangdong Key Lab Nanomicro Mat Res, Sch Chem Biol & Biotechnol, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China. |
| Keywords | LIGHT-EMITTING-DIODES PEROVSKITE SOLAR-CELLS CARRIER DYNAMICS WHITE-LIGHT GRAPHENE NANODOTS PHOTOLUMINESCENCE FLUORESCENCE ENERGY PH |
| Issue Date | 2018 |
| Publisher | NATURE COMMUNICATIONS |
| Citation | NATURE COMMUNICATIONS. 2018, 9. |
| Abstract | Carbon quantum dots (CQDs) have emerged as promising materials for optoelectronic applications on account of carbon's intrinsic merits of high stability, low cost, and environment-friendliness. However, the CQDs usually give broad emission with full width at half maximum exceeding 80 nm, which fundamentally limit their display applications. Here we demonstrate multicolored narrow bandwidth emission (full width at half maximum of 30 nm) from triangular CQDs with a quantum yield up to 54-72%. Detailed structural and optical characterizations together with theoretical calculations reveal that the molecular purity and crystalline perfection of the triangular CQDs are key to the high color-purity. Moreover, multicolored light-emitting diodes based on these CQDs display good stability, high color-purity, and high-performance with maximum luminance of 1882-4762 cd m(-2) and current efficiency of 1.22-5.11 cd A(-1). This work will set the stage for developing nextgeneration high-performance CQDs-based light-emitting diodes. |
| URI | http://hdl.handle.net/20.500.11897/516818 |
| ISSN | 2041-1723 |
| DOI | 10.1038/s41467-018-04635-5 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 化学生物学与生物技术学院 |
