Dual Role of Quantum Dots as Color Conversion Layer and Suppression of Input Light for Full-Color Micro-LED Displays

Hyun, Byung-Ryool1; Sher, Chin-Wei2; Chang, Yu-Wei3,4; Lin, Yonghong1; Liu, Zhaojun1; Kuo, Hao-Chung3,4

2021-07-29

10.1021/acs.jpclett.1c00321

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

In micro-light-emitting diode (micro-LED) displays with color-conversion layers, a facile and efficient technology getting rid of the use of the color filters leads to a big technical leap in cost-effective fabrication. In this study, it is demonstrated that quantum dot (QD) color conversion layers can significantly suppress residual blue excitation light because of the high extinction coefficients of QDs, similar to 0.1% transmittance of blue light for green and red core/shell CdSe/ZnS QD film with thickness of less than 17 mu m, and produce green and red colors. Incorporation of TiO2 nanoparticles into QD solutions enhances more than 10% of the luminous intensity by the scattering effect. It is found that the suppression of QD reabsorption is essential to achieve a high color-conversion efficiency. Our results provide a clear path to a cost-effective fabrication of QD conversion layer micro-LED displays over the full range of their applications.

SCI ; EI

英语

NI论文

第一 ; 通讯

Shenzhen Science and Technology Program[KQTD20170810110313773] ; Shenzhen Technology Research Project (Project Name: Novel Mini-LED flexible transparent displays technology)[JSGG20180507183058189] ; High-level University Fund[G02236005]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000680449800029

AMER CHEMICAL SOC

20213110712526

Cadmium compounds ; Cost effectiveness ; II-VI semiconductors ; Nanocrystals ; Organic light emitting diodes (OLED) ; Oxide minerals ; Semiconductor quantum dots ; TiO2 nanoparticles ; Titanium dioxide

Minerals:482.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Inorganic Compounds:804.2 ; Industrial Economics:911.2

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Hong Kong Univ Sci & Technol, Fok Ying Tung Res Inst, Guangzhou 511458, Peoples R China
3.Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan
4.Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 30010, Taiwan

Hyun, Byung-Ryool,Sher, Chin-Wei,Chang, Yu-Wei,et al. Dual Role of Quantum Dots as Color Conversion Layer and Suppression of Input Light for Full-Color Micro-LED Displays[J]. Journal of Physical Chemistry Letters,2021,12(29):6946-6954.

Hyun, Byung-Ryool,Sher, Chin-Wei,Chang, Yu-Wei,Lin, Yonghong,Liu, Zhaojun,&Kuo, Hao-Chung.(2021).Dual Role of Quantum Dots as Color Conversion Layer and Suppression of Input Light for Full-Color Micro-LED Displays.Journal of Physical Chemistry Letters,12(29),6946-6954.

Hyun, Byung-Ryool,et al."Dual Role of Quantum Dots as Color Conversion Layer and Suppression of Input Light for Full-Color Micro-LED Displays".Journal of Physical Chemistry Letters 12.29(2021):6946-6954.