Exciton control enables high-performance colloidal quantum well light-emitting diodes

被引：12

作者：

Hu, Sujuan ^{[1
]}

Xiang, Wenbin ^{[2
]}

Liu, Baiquan ^{[1
]}

Zhang, Lingjiao ^{[1
]}

Zhang, Genghui ^{[1
]}

Guo, Min ^{[1
]}

Yang, Jinhu ^{[1
]}

Ren, Yunfei ^{[1
]}

Yu, Junhong ^{[3
]}

Yang, Zhenyu ^{[4
]}

Gao, Huayu ^{[1
]}

Wang, Jing ^{[5
]}

Xue, Qifan ^{[6
]}

Yeung, Fion Sze Yan ^{[5
]}

Zhang, Jiayu ^{[2
]}

Kwok, Hoi Sing ^{[5
]}

Liu, Chuan ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China

[2] Southeast Univ, Adv Photon Ctr, Nanjing 210096, Jiangsu, Peoples R China

[3] Nanyang Technol Univ, Luminous Ctr Excellence Semicond Lighting & Displ, Sch Elect & Elect Engn, Sch Phys & Mat Sci,Sch Mat Sci & Nanotechnol, Singapore 639798, Singapore

[4] Sun Yat Sen Univ, Lehn Inst Funct Mat, Sch Chem, MOE Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Peoples R China

[5] Hong Kong Univ Sci & Technol, Dept Elect & ComputerEngineering, State Key Lab Adv Displays & Optoelect Technol, Hong Kong, Peoples R China

[6] South China Univ Technol, Inst Polymer Optoelect Mat & Devices, Sch Mat Sci & Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Peoples R China

来源：

APPLIED PHYSICS REVIEWS | 2024年 / 11卷 / 02期

基金：

中国国家自然科学基金;

关键词：

AUGER RECOMBINATION; SEMICONDUCTOR NANOPLATELETS; EFFICIENT; NARROW;

D O I：

10.1063/5.0206176

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Two-dimensional (2D) nanocrystals are promising for optoelectronic and microelectronic technologies. However, the performance of 2D nanocrystal light-emitting diodes (LEDs) remains limited. Here, exciton dynamics are rationally controlled by both shell engineering and device engineering, obtaining colloidal quantum well LEDs (CQW-LEDs) with superior performance. The formation of CQW films on charge transport layers shows an excellent photoluminescence quantum yield of 76.63%. An unreported relationship among Auger lifetime, electron confinement energy, and external quantum efficiency (EQE) in 2D nanocrystal devices is directly observed. The optimized CQW-LEDs possess a maximum power efficiency of 6.04 lm W-1 and a current efficiency of 9.20 cd A(-1), setting record efficiencies for 2D nanocrystal red LEDs. Additionally, a remarkable EQE of 13.43% has been achieved, accompanied by an exceptionally low efficiency roll-off. Significantly, EQE for flexible CQW-LEDs is 42-fold higher than the previous best results. Furthermore, active-matrix CQW-LEDs on printed circuit boards are developed. The findings not only unlock new possibilities for controlling exciton dynamics but also provide an alternative strategy to achieve high-performance 2D nanocrystal based applications.

引用

页数：11

共 50 条

[1] Delayed fluorescence from inverted singlet and triplet excited states [J].

Aizawa, Naoya ;

Pu, Yong-Jin ;

Harabuchi, Yu ;

Nihonyanagi, Atsuko ;

Ibuka, Ryotaro ;

Inuzuka, Hiroyuki ;

Dhara, Barun ;

Koyama, Yuki ;

Nakayama, Ken-ichi ;

Maeda, Satoshi ;

Araoka, Fumito ;

Miyajima, Daigo .

NATURE, 2022, 609 (7927) :502-506

[2] Spectrally Wide-Range-Tunable, Efficient, and Bright Colloidal Light-Emitting Diodes of Quasi-2D Nanoplatelets Enabled by Engineered Alloyed Heterostructures [J].

Altintas, Yemliha ;

Liu, Baiquan ;

Hernandez-Martinez, Pedro Ludwig ;

Gheshlaghi, Negar ;

Shabani, Farzan ;

Sharma, Manoj ;

Wang, Lin ;

Sun, Handong ;

Mutlugun, Evren ;

Demir, Hilmi Volkan .

CHEMISTRY OF MATERIALS, 2020, 32 (18) :7874-7883

[3] Giant Alloyed Hot Injection Shells Enable Ultralow Optical Gain Threshold in Colloidal Quantum Wells [J].

Altintas, Yemliha ;

Gungor, Kivanc ;

Gao, Yuan ;

Sak, Mustafa ;

Quliyeva, Ulviyya ;

Bappi, Golam ;

Mutlugun, Evren ;

Sargent, Edward H. ;

Demir, Hilmi Volkan .

ACS NANO, 2019, 13 (09) :10662-10670

[4] Auger-Limited Carrier Recombination and Relaxation in CdSe Colloidal Quantum Wells [J].

Baghani, Erfan ;

O'Leary, Stephen K. ;

Fedin, Igor ;

Talapin, Dmitri V. ;

Pelton, Matthew .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2015, 6 (06) :1032-1036

[5] Quasi-2D Colloidal Semiconductor Nanoplatelets for Narrow Electroluminescence [J].

Chen, Zhuoying ;

Nadal, Brice ;

Mahler, Benoit ;

Aubin, Herve ;

Dubertret, Benoit .

ADVANCED FUNCTIONAL MATERIALS, 2014, 24 (03) :295-302

[6] Blue light-emitting diodes based on quasi-two-dimensional perovskite with efficient charge injection and optimized phase distribution via an alkali metal salt [J].

Chu, Zema ;

Zhang, Wei ;

Jiang, Ji ;

Qu, Zihan ;

Ma, Fei ;

Zhao, Yang ;

Chu, Xinbo ;

Shen, Yunxiu ;

Li, Yaowen ;

Yin, Zhigang ;

Zhang, Xingwang ;

You, Jingbi .

NATURE ELECTRONICS, 2023, 6 (05) :360-369

[7] Double-crowned 2D semiconductor nanoplatelets with bicolor power-tunable emission [J].

Dabard, Corentin ;

Guilloux, Victor ;

Greboval, Charlie ;

Po, Hong ;

Makke, Lina ;

Fu, Ningyuan ;

Xu, Xiang Zhen ;

Silly, Mathieu G. ;

Patriarche, Gilles ;

Lhuillier, Emmanuel ;

Barisien, Thierry ;

Climente, Juan, I ;

Diroll, Benjamin T. ;

Ithurria, Sandrine .

NATURE COMMUNICATIONS, 2022, 13 (01)

[8] Solution-processed, high-performance light-emitting diodes based on quantum dots [J].

Dai, Xingliang ;

Zhang, Zhenxing ;

Jin, Yizheng ;

Niu, Yuan ;

Cao, Hujia ;

Liang, Xiaoyong ;

Chen, Liwei ;

Wang, Jianpu ;

Peng, Xiaogang .

NATURE, 2014, 515 (7525) :96-99

[9] Highly Luminescent and Phase-Stable Red/NIR-Emitting All-Inorganic and Hybrid Perovskite Nanocrystals [J].

Das, Somnath ;

Samanta, Anunay .

ACS ENERGY LETTERS, 2021, 6 (11) :3780-3787

[10] 2D II-VI Semiconductor Nanoplatelets: From Material Synthesis to Optoelectronic Integration [J].

Diroll, Benjamin T. ;

Guzelturk, Burak ;

Po, Hong ;

Dabard, Corentin ;

Fu, Ningyuan ;

Makke, Lina ;

Lhuillier, Emmanuel ;

Ithurria, Sandrine .

CHEMICAL REVIEWS, 2023, 123 (07) :3543-3624

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