Article
Materials Science, Multidisciplinary
Wenxu Yin, Xiaoyu Zhang, Xuyong Yang, Andrey L. Rogach, Weitao Zheng
Summary: This article summarizes the recent progress in the development of near-infrared quantum dot LEDs, focusing on how their device structure and emitter properties facilitate improvement of device performance. The challenges and opportunities associated with these LEDs are also discussed.
Article
Chemistry, Multidisciplinary
Jaeyoul Kim, Donghyo Hahm, Wan Ki Bae, Hyunho Lee, Jeonghun Kwak
Summary: This study analyzes the transient electroluminescence signals of dichromatic QLEDs and provides insights into the operation mechanisms such as charge injection, exciton recombination, and electron mobility. Additionally, it quantitatively measures the effects of Förster resonant energy transfer and exciton quenching in QLED operation.
Review
Materials Science, Multidisciplinary
Dadi Tian, Haiguang Ma, Guangguang Huang, Min Gao, Fensha Cai, Yan Fang, Chenguang Li, Xiaohong Jiang, Aqiang Wang, Shujie Wang, Zuliang Du
Summary: This review focuses on the research progress in the materials and device physics of quantum dot light-emitting diodes (QLEDs). It discusses the effects of carrier dynamics and device stability on performance, and suggests future research directions.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Shuaibing Wang, Yu Li, Jie Chen, Ouyang Lin, Wentao Niu, Chunhe Yang, Aiwei Tang
Summary: Quantum dot light-emitting diodes (QLEDs) have rapidly developed as a competitive alternative to cadmium-based QLEDs, utilizing indium phosphide (InP)-based quantum dots (QDs) without heavy metals. This review summarizes the properties of InP-based QDs, carrier dynamics, and the development of red, green, and blue primary color InP-based QLEDs from their first report in 2011 to the current state of the art. The effects of QD structure and device structure on the performance of InP-based QLEDs are also discussed.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Omer Arif, Valentina Zannier, Francesca Rossi, Daniele Ercolani, Fabio Beltram, Lucia Sorba
Summary: The study presents the self-catalyzed growth of InAs/InSb/InAs axial heterostructured nanowires with a single defect-free InSb quantum dot on Si substrates using chemical beam epitaxy. By systematically varying the growth parameters, the researchers found that the growth temperature strongly influences the axial and radial growth rates of the top InAs segment, allowing for control over the thickness of the InAs shell around the InSb quantum dot. Additionally, the study highlights the importance of In diffusion paths and the interplay of growth mechanisms in determining the final shape of the nanowires.
Review
Chemistry, Physical
Taesoo Lee, Minhyung Lee, Hansol Seo, Minjun Kim, Beomsoo Chun, Jeonghun Kwak
Summary: This review summarizes previous studies on top-emitting device structures and discusses ways to improve the performance of top-emitting quantum dot-based light-emitting diodes (TQLEDs). The relevant theories for the optoelectrical properties of TQLEDs are introduced, and advancements in device optimization are presented. Multilateral strategies for TQLEDs to be widely applied in advanced industries are also discussed. This review aims to provide valuable insights for realizing commercial TQLEDs applicable to a broad range of applications.
Article
Chemistry, Multidisciplinary
Taesoo Lee, Byong Jae Kim, Hyunkoo Lee, Donghyo Hahm, Wan Ki Bae, Jaehoon Lim, Jeonghun Kwak
Summary: This study demonstrates bright and stable QLEDs on a Si substrate, achieving high brightness, efficiency, and stability through tailored interface and optimized device structure, pushing the development and application of QLEDs.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Logan P. Keating, Hyunho Lee, Steven P. Rogers, Conan Huang, Moonsub Shim
Summary: By using transient electroluminescence and time-resolved photoluminescence measurements, the effects of offset voltage on charging and charge transport were examined, revealing different charging processes and mechanisms.
Article
Materials Science, Multidisciplinary
Denglin Zhao, Yueting Zheng, Tingtao Meng, Yangbin Zhu, Jipeng Jing, Xiang Chen, Hongjin Gao, Chaomin Mao, Wenchen Zheng, Hailong Hu, Tailiang Guo, Fushan Li
Summary: This study demonstrated the fabrication of a highly ordered QD monolayer with the LB technique, which significantly improved the performance and lifetime of QLEDs. The LB-HL strategy showed promising scalability for large-area QD monolayers.
SCIENCE CHINA-MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Songman Ju, Chaomin Mao, Jinping Zheng, Kaiyu Yang, Lihua Lin, Tailiang Guo, Hailong Hu, Fushan Li
Summary: This work proposes a new strategy to enhance the electroluminescent performance of perovskite quantum dots (PQDs) by creating a PQD film. By manipulating the ion distribution and trap density in the PQD film through varying pre-bias voltage and time, the device's capacitance value and luminous efficiency can be modified. The external quantum efficiency of the device increased from 2.81% to 7.95% through this strategy. This research provides a new approach for achieving perovskite quantum dot light-emitting devices with high luminous efficiency.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Lianna Chen, Zhiyuan Qin, Shuming Chen
Summary: In this study, a new method has been developed to achieve high-resolution pixelated emission by controlling the thickness of transparent electrodes, resulting in a color-converting cavity that can selectively convert unpatterned quantum-dot white emission into saturated red, green, and blue emission. This method enables ultrahigh density red, green, and blue emission with a resolution of approximately 1700 pixels per inch, as well as achieving a color gamut of 111% NTSC.
Article
Chemistry, Multidisciplinary
Shiyun Lei, Yuanyuan Xiao, Kanglin Yu, Biao Xiao, Ming Wan, Liyong Zou, Qingliang You, Renqiang Yang
Summary: This study investigates the hole injection mechanism in quantum dot light-emitting diodes (QLEDs) through a combination of experiments and simulations. It reveals that applied bias reduces the barrier height, facilitating hole injection and confining electrons within the quantum dots. The research also demonstrates that thermally assisted tunneling is the predominant pathway for hole injection. This study is significant for understanding the hole injection mechanism in QLEDs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mingyuan Xie, Jie Guo, Xiaoyu Zhang, Chenghao Bi, Lin Zhang, Zema Chu, Weitao Zheng, Jingbi You, Jianjun Tian
Summary: This study presents a solution to achieve high-efficiency pure-red perovskite light-emitting diodes (PeLEDs) by stabilizing the structure of quantum dots and reducing adverse effects. The use of composite ligands helped stabilize the strong-confined quantum dots and suppress Auger recombination in the devices. Additionally, adjustments in the valence band of the quantum dots improved charge injection balance in the PeLEDs.
Review
Chemistry, Multidisciplinary
Qinghong Lin, Yangbin Zhu, Yue Wang, Deli Li, Yi Zhao, Yang Liu, Fushan Li, Wei Huang
Summary: Quantum dot light-emitting diodes (QLEDs) show excellent performances in efficiency, color purity/tunability, and solution-processing ability, making them a potential candidate for flexible and ultrathin EL lighting and display. They also have potential applications in the internet of things and artificial intelligence. This review summarizes recent developments, challenges, and future outlook of flexible QLEDs, including quantum dot materials, working mechanism, flexible/stretchable strategies, and smart applications such as medical devices and neural sensors. It aims to provide a systematic understanding and inspiration for the development of flexible QLEDs in emerging applications.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
I. Teng Cheong, Josef Mock, Maria Kallergi, Elisabeth Gross, Alkiviathes Meldrum, Bernhard Rieger, Markus Becherer, Jonathan G. C. Veinot
Summary: This article reports the fabrication and testing of SiQD-LEDs with a Fabry-Perot cavity structure, which exhibit narrow spectral linewidth and high stability.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Energy & Fuels
Magnus C. Wagener, Denise Montesdeoca, Qi Lu, Andrew R. J. Marshall, Anthony Krier, J. R. Botha, Peter J. Carrington
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2019)
Article
Nanoscience & Nanotechnology
Atif A. Khan, M. Herrera, N. Fernandez-Delgado, D. F. Reyes, J. Pizarro, E. Repiso, A. Krier, S. Molina
Article
Nanoscience & Nanotechnology
Atif A. Khan, E. Repiso, M. Herrera, P. J. Carrington, M. de la Mata, J. Pizarro, A. Krier, S. Molina
Article
Materials Science, Multidisciplinary
Ezekiel A. Anyebe, Manoj Kesaria, A. M. Sanchez, Qiandong Zhuang
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Physics, Applied
D. M. Di Paola, Q. Lu, E. Repiso, M. Kesaria, O. Makarovsky, A. Krier, A. Patane
APPLIED PHYSICS LETTERS
(2020)
Article
Optics
Furat A. Al-Saymari, Adam P. Craig, Qi Lu, Andrew R. J. Marshall, Peter J. Carrington, Anthony Krier
Article
Physics, Applied
E. Delli, P. D. Hodgson, M. Bentley, E. Repiso, A. P. Craig, Q. Lu, R. Beanland, A. R. J. Marshall, A. Krier, P. J. Carrington
APPLIED PHYSICS LETTERS
(2020)
Article
Multidisciplinary Sciences
Hailu Wang, Fang Wang, Hui Xia, Peng Wang, Tianxin Li, Juzhu Li, Zhen Wang, Jiamin Sun, Peisong Wu, Jiafu Ye, Qiandong Zhuang, Zaixing Yang, Lan Fu, Weida Hu, Xiaoshuang Chen, Wei Lu
Summary: This study presents a unique method of artificially separating hot electrons from cold ones in semiconductor nanowire transistors, offering the opportunity to observe and modulate electron occupied state, energy, mobility and path. Such a method may provide a new degree of freedom in manipulating non-equilibrium electrons for electronic and optoelectronic applications.
NATIONAL SCIENCE REVIEW
(2021)
Article
Materials Science, Multidisciplinary
Andrew Bainbridge, Adam P. Craig, Furat Al-Saymari, Anthony Krier, Andrew R. J. Marshall
Summary: Resonant cavity-enhanced photodiodes targeting the spectral absorption region of C-H bonds have been demonstrated, allowing for high spectral specificity and precise sensing of specific gases in the infrared spectrum.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Peter D. Hodgson, Dominic Lane, Peter J. Carrington, Evangelia Delli, Richard Beanland, Manus Hayne
Summary: ULTRARAM is a nonvolatile memory with the potential to achieve fast and ultralow-energy electron storage. Its implementation on a Si substrate is a vital step towards cost-effective mass production. This memory has a remarkably fast switching speed and low energy consumption, surpassing dynamic random access memory and flash.
ADVANCED ELECTRONIC MATERIALS
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Peter J. Carrington, Evangelia Delli, Veronica Letka, Matt Bentley, Peter D. Hodgson, Eva Repiso, Jonathan P. Hayton, Adam P. Craig, Qi Lu, Richard Beanland, Anthony Krier, Andrew R. J. Marshall
INFRARED SENSORS, DEVICES, AND APPLICATIONS X
(2020)
