Review
Materials Science, Multidisciplinary
Jin-Tao Wang, Shu-Zhuang Wang, Yu-Hang Zhou, Yan-Hui Lou, Zhao-Kui Wang
Summary: Metal halide perovskites have shown great potential for flexible optoelectronics. This article summarizes the major breakthroughs in the field of flexible PeLEDs and discusses the challenges that hinder their performance and commercialization.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Feisong Qin, Min Lu, Siqi Sun, Po Lu, Nannan Feng, Yanbo Gao, Xue Bai, Zhennan Wu, Junhua Hu, Yu Zhang
Summary: Introduces the use of PMMA modified printing paper as substrates for highly flexible red-emitting perovskite light emitting diodes (PeLEDs), which have easy synthesis and excellent optoelectronic properties. This extension of technology widens the opportunity of PeLEDs in extremely flexible and inexpensive applications.
IEEE ELECTRON DEVICE LETTERS
(2023)
Article
Multidisciplinary Sciences
Yifan Yao, Yusheng Chen, Kuidong Wang, Nicholas Turetta, Stefania Vitale, Bin Han, Hanlin Wang, Lei Zhang, Paolo Samori
Summary: A foldable inverted polymer light-emitting diode (iPLED) based on a self-suspended asymmetrical vertical nanoscaffold is reported, exhibiting excellent mechanical robustness and high brightness. Arbitrary emitting patterns can be generated using photolithography and brush painting, with individual pixel resolution of 10 μm. The iPLED can be supported on flexible polyimide foils and recycled by washing and refilling with different conjugated polymers capable of emitting light of different color.
Article
Chemistry, Physical
Anna S. Miroshnichenko, Konstantin Deriabin, Maria Baeva, Fedor M. Kochetkov, Vladimir Neplokh, Vladimir V. Fedorov, Alexey M. Mozharov, Olga Yu Koval, Dmitry Krasnikov, Vlad A. Sharov, Nikita A. Filatov, Dmitry S. Gets, Albert G. Nasibulin, Sergey Makarov, Ivan S. Mukhin, Vadim Yu Kukushkin, Regina M. Islamova
Summary: The combination of transparent and durable silicone rubbers with semiconductor materials has enabled the design of highly flexible LEDs. By developing electrodes based on composite materials and nanowires, a novel platform for fabrication of flexible optoelectronic devices has been proposed.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Pierluigi Cossari, Marco Pugliese, Giuseppe Gigli, Vincenzo Maiorano
Summary: The development of solid-state electrochromics (EC) poses a new challenge for effective integration with other optoelectronic devices, while the design of flexible ECOLED can enhance performance and integrate OLED on larger and flexible substrates. This technology achieves high transparency, large optical contrast, low operating voltage, fast switching speed, strong stability, and is suitable for both display and lighting applications.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Physical
Wenwen Wu, Yue Liu, Xinping Zhang
Summary: Researchers have developed a large-area array of nanoscale organic light-emitting diodes (OLEDs) that produce amplified emission with a selected spectrum in a narrow band. These OLEDs share a common active layer that acts as a waveguide and gain channel for light-emitting signals. The periodic structure of the array allows for diffraction and confinement of the electroluminescence signal, resulting in strong spectral selectivity and amplification.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Jianxun Lu, Xiang Guan, Yuqing Li, Kebin Lin, Wenjing Feng, Yaping Zhao, Chuanzhong Yan, Mingliang Li, Yueyue Shen, Xiangqian Qin, Zhanhua Wei
Summary: This paper proposes managing charge injection and recombination behavior in CsSnI3-based Pero-LEDs by tuning the interface area of perovskite and charge-transporter. By utilizing a dendritic CsSnI3 structure, efficient lead-free NIR Pero-LEDs are achieved with a record external quantum efficiency of 5.4%. The dendritic structure also shows superiorities in flexible devices, maintaining almost no morphology change even after 2000 cycles of bends, and retaining 93.4% of initial EQEs after 50 cycles of bends.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaoyan Qian, Yang Shen, Liu-Jiang Zhang, Minglei Guo, Xiao-Yi Cai, Yu Lu, Huimin Liu, Ye-Fan Zhang, Yanqing Tang, Li Chen, Yingyi Tang, Jingkun Wang, Wei Zhou, Xingyu Gao, HongYing Mao, Yanqing Li, Jian-Xin Tang, Shuit-Tong Lee
Summary: Inspired by pangolins, researchers propose a bionic structure design for self-healing flexible perovskite light-emitting diodes (PeLEDs). By employing a polymer-assisted crystal regulation method with a soft elastomer, the performance of the PeLEDs is significantly enhanced, achieving record external quantum efficiency and high resistance to flexural strain.
Article
Engineering, Electrical & Electronic
Qiang Su, Heng Zhang, Shuming Chen
Summary: By utilizing transparent QLED elements, individually addressable red/green/blue emissions can be achieved in tandem QLEDs, with the ability to connect QLED elements in series or in parallel to improve external quantum efficiency.
This new implementation strategy for tandem QLEDs shows promising applications in both display and lighting fields, with enhanced EQE.
NPJ FLEXIBLE ELECTRONICS
(2021)
Article
Optics
Konthoujam James Singh, Xiaotong Fan, Annada Sankar Sadhu, Chun-Ho Lin, Fang-Jyun Liou, Tingzhu Wu, Yu-Jung Lu, Jr-Hau He, Zhong Chen, Tom Wu, Hao-Chung Kuo
Summary: A flexible white-light system for high-speed visible-light communication (VLC) applications is proposed, consisting of a high-bandwidth CsPbBr3 quantum-dot paper and semipolar blue micro-LEDs, which could pave the way for VLC wearable devices.
PHOTONICS RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Shuping Hou, Jie Liu, Feipeng Shi, Guo-Xu Zhao, Jia-Wei Tan, Gong Wang
Summary: Flexible organic light-emitting diodes and perovskite light-emitting diodes have been investigated, and silver nanowires electrodes are found to have potential applications as transparent conductive electrodes. This mini-review summarizes the advancements in silver nanowires electrodes for LEDs and discusses the relationship between electrode optimization and device performance.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xiangyu Fu, Yash Mehta, Yi-An Chen, Lei Lei, Liping Zhu, Nilesh Barange, Qi Dong, Shichen Yin, Juliana Mendes, Siliang He, Renuka Gogusetti, Chih-Hao Chang, Franky So
Summary: The study demonstrates highly directional and polarized light emission from LEDs by selectively diffracting the TE waveguide mode, showing potential for more efficient photonic applications.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Yoshinobu Matsuda, Ryunosuke Umemoto, Mitsuru Funato, Yoichi Kawakami
Summary: A platform for integrating multiple emission wavelengths on a single chip using epitaxial growth and three-dimensional design is presented. This approach overcomes the challenges of phosphor-related issues and complex assembly processes, allowing for flexible spectral control and monolithic integration of different emission colors.
SCIENTIFIC REPORTS
(2023)
Article
Optics
Zhe Zhuang, Daisuke Iida, Martin Velazquez-Rizo, Kazuhiro Ohkawa
Summary: The study introduced a method for fabricating ultra-small InGaN μLEDs, successfully realizing different shapes of green μLEDs. It was found that as the size of the μLED decreases, the series resistance and turn-on voltage increase, while the light output power density and external quantum efficiency also improve.
Article
Materials Science, Multidisciplinary
Khan Le, Florian von Toperczer, Feray Uenlue, Gopinath Paramasivam, Florian Mathies, Edgar Nandayapa, Emil J. W. List-Kratochvil, Thomas Fischer, Klas Lindfors, Sanjay Mathur
Summary: This research report firstly presents the single-step fabrication of CsPbBr3@PVP nanofibers in a customized electrospinning process performed under ambient conditions from a water-based precursor solution. The water-based approach enables the incorporation of a conductive polymer into the compound fiber by blending the perovskite precursor ink with commercially available PEDOT:PSS dispersion. The electrospun fiber mats show structural stability at ambient conditions for at least 5 months and can be utilized in electroluminescence devices, demonstrating the promising applications of perovskite nanofibers in flexible and stretchable optoelectronics.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Do Van Lam, Muhammad Sohail, Jae-Hyun Kim, Hak Joo Lee, Seong Ok Han, Jonghwa Shin, Duckjong Kim, Hyunuk Kim, Seung-Mo Lee
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Sanghyeok Kim, Jaeho Park, Jinjae Lee, Jae-Hyun Kim, Seunghwa Ryu, Inkyu Park
Summary: This study investigated the effect of sodium chloride (NaCl) solutions on the mechanical characteristics of silver (Ag) nanoparticle thin films on a flexible polymer substrate. It was found that exposure to NaCl solution significantly increased the porosity and decreased the strain of Ag NP thin films, leading to a drastic deterioration in surface adhesion.
Article
Chemistry, Multidisciplinary
Taeksu Lee, Jaewoo Lim, Kyoungsook Park, Eun-Kyung Lim, Jae-Jong Lee
Article
Nanoscience & Nanotechnology
Bong Sung Kim, Sejeong Won, Jungkook Seo, Sang Kyu Jeong, Chan Kim, Kwang-Seop Kim, Sun Ho Kim, Sung Min Cho, Jae-Hyun Kim
Summary: This paper introduces an embedded reverse-offset printing method for the fabrication of transparent electrodes, addressing the critical issues of microscale pattern formation and surface planarization. Experimental results demonstrate that OLED devices fabricated using EROP exhibit higher current efficiencies compared to insulator-patterned AgNW OLEDs and traditional ITO OLEDs, with improvements of 38% and 25% respectively.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Hyunje Park, Jaeseok Hwang, Tae Hyeong Lee, Jaejong Lee, Dae Joon Kang
Summary: The study focuses on secondary electrohydrodynamic instability in polymer films to produce easy-to-control morphological anisotropic wettability without the need for chemical modifications. Advantages of anisotropic hydrophilic surfaces fabricated by secondary phase instability of polymer films for droplet condensation and removal result in a higher efficiency in water harvesting applications compared to traditional hydrophilic surfaces.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Taeksu Lee, Soongeun Kwon, Hak-Jong Choi, Hyungjun Lim, Jaejong Lee
Summary: The study introduces a repeatable SERS-based microfluidic device with a disposable SERS substrate and a reusable microfluidic channel. These components, prepared through mechanical processing and nanoimprint lithography, provide excellent SERS enhancement and reliable signal reproducibility, facilitating accurate detection of target molecules such as microRNA.
Article
Biophysics
Jaewoo Lim, Byunghoon Kang, Hye Young Son, Byeonggeol Mun, Yong-Min Huh, Hyun Wook Rho, Taejoon Kang, Jeong Moon, Jae-Jong Lee, Seung Beom Seo, Soojin Jang, Seong Uk Son, Juyeon Jung, Seungjoo Haam, Eun-Kyung Lim
Summary: The newly developed exoNA-sensing chip, based on microfluidic and 3D-nanostructured hydrogels, allows for rapid detection of ERBB2 with high accuracy and selectivity.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Prashant Narute, Rakesh S. Sharbidre, Chang Jun Lee, Byong Chon Park, Hyun-June Jung, Jae-Hyun Kim, Seong-Gu Hong
Summary: This study introduces a roll-based clean transfer approach for large-area wrinkled graphene onto polymeric substrates. The method enables the controllable fabrication of graphene wrinkle structures on a large area while improving the transferability of wrinkled graphene. The transferred wrinkled graphene possesses a desirable combination of superior stretchability, optical transmittance, sheet resistance, and electromechanical stability, making it suitable for transparent flexible and stretchable electronics applications.
Article
Chemistry, Multidisciplinary
Dao Thi Dung, Do Van Lam, Euijin Roh, Sanghyeon Ji, Jong Min Yuk, Jae-Hyun Kim, Hyunuk Kim, Seung-Mo Lee
Summary: Ni/Co/Co3O4@C nanorods were synthesized via microwave synthesis and laser-scribing methods, exhibiting efficient overall water splitting with low overpotentials and good durability.
Article
Nanoscience & Nanotechnology
Seong Uk Son, Eun-Kyung Lim, Soojin Jang, Jaewoo Lim, Seung Beom Seo, Taejoon Kang, Juyeon Jung, Seo Yeong Oh, Sun-Woo Yoon, Dongeun Yong, Jaejong Lee
Summary: The study developed a conductive thread-based immunosensor to easily detect airborne viruses, which is important in preventing the spread of infectious diseases.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Do Van Lam, Dao Thi Dung, Jae-Hyun Kim, Seung-Mo Lee
Summary: Researchers prepared a flexible and carbonaceous host decorated with NiO nanoparticles for the MnO2 cathode, effectively solving the problem of Mn dissolution during cycling. The synergistic effect between NiO nanoparticles and MnO2 led to high capacity and good cyclic performance of the Aqua Zn-ion batteries. This study provides a new approach for designing MnO2-based cathodes of AZIBs.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hyunje Park, Jaeseok Hwang, Jaejong Lee, Dae Joon Kang
Summary: This study introduces an EHIP process using an ultrahigh electric field to accelerate pattern growth evolution, overcoming challenges in process parameter controllability and replicate densely packed nanostructures.
Article
Chemistry, Physical
Viet Phuong Nguyen, Ji Su Park, Jong Min Yuk, Minsub Oh, Jae-Hyun Kim, Seung-Mo Lee
Summary: In this study, a heterostructure of defective hydrated vanadium oxide embedded in porous carbon textile was used to overcome the slow Zn2+ diffusion and poor electronic conductivity in oxide-based cathodes for ZIBs. The heterostructure promoted Zn2+ adsorption, intercalation, and fast charge transfer, leading to high rate capability and structural stability. Additionally, the heterostructure exhibited excellent mechanical robustness and electrochemical stability in a flexible ZIB.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Viet Phuong Nguyen, Mikyung Lim, Kyung-Shik Kim, Jae-Hyun Kim, Ji Su Park, Jong Min Yuk, Seung-Mo Lee
Summary: While MXenes theoretically have excellent electrical and thermal properties, the synthesized MXene often falls short of expectations due to structural defects formed during synthesis. This study shows that the thermal, electrical, and mechanical properties of Ti3C2 MXene can be significantly improved through platinum vapor phase infiltration, resulting in enhanced efficiency, high heating rate, and good stability in electrothermal heaters.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
