Article
Chemistry, Multidisciplinary
Hang Song, Dingqin Hu, Jie Lv, Shirong Lu, Chen Haiyan, Zhipeng Kan
Summary: The emergence of fused ring electron acceptors has improved the power conversion efficiency of organic solar cells. However, the development of cathode interlayers lags behind and limits device performance. This study demonstrates the effectiveness of a hybrid cathode interlayer in improving device efficiency and provides insights for the selection and engineering of cathode interlayers.
Article
Chemistry, Multidisciplinary
Yang Qin, Yilin Chang, Xiangwei Zhu, Xianrong Gu, Lidan Guo, Yixiao Zhang, Qi Wang, Jianqi Zhang, Xiaoli Zhang, Xinfeng Liu, Kun Lu, Erjun Zhou, Zhixiang Wei, Xiangnan Sun
Summary: The study demonstrates the potential of synthesized small-molecule CIL SME1 in improving the performance of polymer solar cells by optimizing exciton dissociation and charge collection, achieving a high power conversion efficiency of up to 18.4% in PM6:BTP-eC9-based devices.
Article
Nanoscience & Nanotechnology
Ping Cai, Xiaofang Huang, Tao Zhan, Guiting Chen, Rihang Qiu, Lianjie Zhang, Xiaogang Xue, Zhongmin Wang, Junwu Chen
Summary: A novel cross-linkable and alcohol-soluble pyridine-incorporated polyfluorene derivative, PFOPy, was synthesized and used as a cathode interface layer in organic solar cells (OSCs), exhibiting excellent solvent resistance, reduced work function, and improved interface contact, leading to significant improvements in photovoltaic performance and stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Juan Pei, Xueting Huang, Xue Zhao, Haijun Lv, Shaorui Chen, Shaoyan Zhang, Yingpin Li, Yanzhong Hao
Summary: By employing organic dyes to modulate the interfacial properties, this study improved the compatibility between organic and inorganic materials, enhanced the energy level alignment of the hybrid films, and achieved a notable power conversion efficiency of 2.91%. The intrinsic factors affecting cell performance were investigated through electrochemical impedance and open circuit voltage decay measurements.
SURFACES AND INTERFACES
(2021)
Article
Energy & Fuels
Bruno Lorenzi, Paolo Mariani, Andrea Reale, Aldo Di Carlo, Gang Chen, Dario Narducci
Summary: A study reported the modeling and development of customized thermoelectric generators, optimized to be hybridized with amorphous silicon, Gallium Indium Phosphide, or Perovskites solar cells. Experimental validation demonstrated efficiency gains in Perovskites solar cells at typical operating temperatures. This study accurately showcased the real potential of thermoelectric hybridization of solar cells.
Review
Chemistry, Inorganic & Nuclear
Yaoqiang Gan, Jian Sun, Pingchun Guo, Hedong Jiang, Jiake Li, Hua Zhu, Xueyun Fan, Liqun Huang, Yanxiang Wang
Summary: Perovskite solar cells (PSCs) have the advantages of low cost and excellent photoelectric performance. However, the use of precious metals as electrode materials limits their industrialization. This paper reviews the progress in the application of carbon materials in PSCs, focusing on the issues of poor interface contact and electrode resistance.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Multidisciplinary
Yanhe Xiang, Bowei Xu, Ying Li
Summary: This mini-review highlights the great potential of solution-processed semiconductor (SPS) materials as cathode interlayers (CILs) in organic solar cells (OSCs). The working mechanism and material design strategy of SPS-based CIL materials are elucidated. The SPS-based CIL materials, including organic small molecules, conjugated polymers, non-conjugated polymers, and transition metal oxides, are summarized and the structure-property-performance relationship of SPS-based CIL materials is revealed.
Review
Energy & Fuels
Jiaying Chen, Youtian Mo, Chaoying Guo, Jiansen Guo, Bingshe Xu, Xi Deng, Quan Xue, Guoqiang Li
Summary: The combination of III-V compound semiconductor materials and organic semiconductor materials is a potential pathway to solve the problems of conventional doped p-n junction solar cells. This review presents the recent progress of organic-inorganic hybrid solar cells based on polymers and III-V semiconductors, including materials, devices, growth processes, patterning and etching processes, advanced device structure designs, and optimization pathways for efficiency enhancement. The future development of such hybrid cells is also discussed.
Review
Chemistry, Physical
Huanyu Chen, Faguang Zhou, Zhiwen Jin
Summary: CsPbX3 (X=Br, I) perovskite solar cells have gained increasing attention due to their excellent stability, but challenges remain in improving power conversion efficiency and practical stability. Interface engineering, with strategies such as optimizing crystallinity and reducing contact resistance, has emerged as a promising method to address these issues. Further optimization and facing challenges are expected for the future development of these solar cells.
Article
Chemistry, Multidisciplinary
Benfang Niu, Haoran Liu, Yanchun Huang, Emely Gu, Minxing Yan, Ziqiu Shen, Kangrong Yan, Buyi Yan, Jizhong Yao, Yanjun Fang, Hongzheng Chen, Chang-Zhi Li
Summary: A simple and scalable interfacial strategy is reported to facilitate the assembly of high-performance inverted perovskite solar cells (PSCs) and scale-up modules. This strategy improves the chemical stability, charge extraction, and energy level alignment of the hole-selective interface, while promoting perovskite crystallization. As a result, the corresponding inverted PSCs and modules achieve remarkable power conversion efficiencies (PCEs) of 24.5% and 20.7% (aperture area of 19.4 cm(2)), respectively. This strategy is also effective for perovskite with various bandgaps, demonstrating the highest PCE of 19.6% for the 1.76-eV bandgap PSCs.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Thomas Tom, Eloi Ros, David Rovira, Julian Lopez-Vidrier, Jose Miguel Asensi, Pablo Ortega, Joaquim Puigdollers, Cristobal Voz, Joan Bertomeu
Summary: Recently, the development of carrier selective contacts for crystalline silicon solar cells has attracted great interest in order to expand silicon photovoltaics. By utilizing new electron and hole selective layers with low-cost processing and non-doping contacts, it is possible to achieve higher efficiencies. In this study, a non-doped heterojunction silicon solar cell was fabricated using DNA as the electron transport layer (ETL) and V2O5 as the hole transport layer (HTL), achieving a power conversion efficiency of 15.6%.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Yuting Li, Mengqi Cui, Na Li, Xia Tian, Xiujuan Hao, Yangyang Zhang, Yuying Wang, Rong Wang, Qikun Rong, Guofu Zhou, Li Nian
Summary: In this paper, a series of organosilica nanodots (OSiNDs) were prepared as cathode interface materials using one-step hydrothermal synthesis, and the impact of different functional groups on the performance of organic solar cells (OSCs) was investigated. The results showed that the best efficiency reached 15.91%, and the OSiND-based devices exhibited improved light stability after UV irradiation.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Guangbao Wu, Rui Liang, Zhipeng Zhang, Mingzheng Ge, Guichuan Xing, Guoxing Sun
Summary: 2D metal-halide perovskites have garnered intense research interest due to their unique layer structure and superior stability, particularly in terms of optoelectronic properties. Recent studies have demonstrated the remarkable performance and potential of these materials in solar cells.
Article
Materials Science, Multidisciplinary
Li Tian, Qifan Xue, Zhicheng Hu, Fei Huang
Summary: This mini-review provides a brief overview of recent developments in interfacial engineering for non-fullerene organic solar cells (NF-OSCs), focusing on the design and application of cathode/anode interface materials for NF-OSCs and interconnecting materials for nonfullerene organic tandem solar cells. The review also offers helpful guidance and challenges regarding interface materials for NF-OSCs.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Qilun Zhang, Tiefeng Liu, Sebastian Wilken, Shaobing Xiong, Huotian Zhang, Iuliana Ribca, Mingna Liao, Xianjie Liu, Renee Kroon, Simone Fabiano, Feng Gao, Martin Lawoko, Qinye Bao, Ronald Oesterbacka, Mats Johansson, Mats Fahlman
Summary: This study demonstrates the use of binary cathode interface layer (CIL) strategy based on industrial solvent fractionated LignoBoost kraft lignin (KL) for fabrication of organic solar cells (OSCs). The results show that the binary CILs work well in OSCs with large KL ratio compatibility and exhibit equivalent or even higher efficiency compared to traditional CILs. Additionally, the combination of KL and BCP significantly improves OSC stability.
ADVANCED MATERIALS
(2023)
Article
Engineering, Mechanical
Xiaopeng Li, Ziqi Yu, Hideo Iizuka, Taehwa Lee
Summary: This letter presents the design and experimental demonstration of extremely asymmetric flexural wave near-unit absorption and unidirectional zero reflection at the exceptional point using a metalayer composed of a pair of loss-induced asymmetrical resonators. The mechanism behind such extremely asymmetric behaviors is explored, and it is found that the exceptional point and critical coupling condition are simultaneously fulfilled by the metalayer. A design of broadband absorption is further suggested and validated through numerical simulation.
EXTREME MECHANICS LETTERS
(2022)
Article
Physics, Applied
Ryohei Tsuruta, Xiaopeng Li, Ziqi Yu, Hideo Iizuka, Taehwa Lee
Summary: Soft reconfigurable acoustic absorbers were demonstrated using flexible tubular resonators. The compliant structure of the tube absorbers promotes acoustic-structure coupling and exhibits hybrid resonances of acoustic and structural modes. The soft walls of the resonators decrease the resonance frequencies for low-frequency absorption by reducing the effective sound speed inside the tube.
PHYSICAL REVIEW APPLIED
(2022)
Article
Thermodynamics
Ziqi Yu, Xiaopeng Li, Taehwa Lee, Hideo Iizuka
Summary: The study demonstrates that significant enhancement of heat transfer can be achieved by introducing multilayer Weyl semimetals and simultaneously modulating rotation and material loss. By tuning the rotation angle and off-diagonal components of the permittivity tensor in the multilayer system, optimal heat transfer enhancement can be realized.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Chemistry, Multidisciplinary
Dohyung Kim, Hyeonsu Bang, Hyoung Won Baac, Jongmin Lee, Phuoc Loc Truong, Bum Ho Jeong, Tamilselvan Appadurai, Kyu Kwan Park, Donghyeok Heo, Vu Binh Nam, Hocheon Yoo, Kyeounghak Kim, Daeho Lee, Jong Hwan Ko, Hui Joon Park
Summary: An analog resistive switching memory with 3D ion transport channels is demonstrated using a laser-assisted photo-thermochemical process, enabling high reliability and robustness. This architecture also proposes a practical adaptive learning rule for hardware neural networks that simplifies voltage pulse application while maintaining high computing accuracy. Additionally, the memory can function as a diffusive-memristor, emulating crucial operations in biological nervous systems.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Hansol Park, Jihyeon Heo, Bum Ho Jeong, Jongmin Lee, Hui Joon Park
Summary: This study proposes a facile interfacial doping process for the hole transport layer (HTL) of perovskite solar cells (PSC), which significantly improves the optical and electrical properties of the HTL, enhances the processability and hydrophobicity of the material, and increases the built-in potential of the device. As a result, the efficiency of the p-i-n PSC device is greatly enhanced, reaching 20.67% with superior stability.
JOURNAL OF POWER SOURCES
(2023)
Article
Nanoscience & Nanotechnology
Anwesha Saha, Taigao Ma, Haozhu Wang, L. Jay Guo
Summary: Decorative chrome plating is widely used for attractive metal finishings, but it is hazardous to workers and harmful to the environment. To overcome these issues, we propose a multilayer thin film structure that mimics chrome appearance and achieve additional functionalities beyond decoration using a reinforcement learning algorithm. Experimental results show indistinguishable chrome color and validate the effectiveness of the inverse design approach.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yun Zhang, Wei-Jie Feng, Wenkai Zhu, Xiwei Shan, Wei-Kuan Lin, L. Jay Guo, Tian Li
Summary: We demonstrate a universally applicable coloration strategy for polymer-based radiative cooling materials by nanoimprinting. By modulating light interference with periodic structures on polymer surfaces, specular colors can be induced while maintaining the hemispheric optical responses of radiative cooling polymers. The retrofit strategy is exemplified by four different polymer films with a minimum impact on optical responses compared to the pristine films. The potential roll-to-roll manufacturing empowers a scalable, low-cost, and easy-retrofitting solution for colored radiative cooling films.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Biomedical
Jennie J. Paik, Boonjae Jang, Sunghyun Nam, L. Jay Guo
Summary: This study presents a physically crosslinked poly(vinyl alcohol) (PVA)-based hydrogel that acts as a transparent strain-sensing skin adhesive for motion monitoring. By incorporating Zn2+ into the ice-templated PVA gel, a dense amorphous structure is observed, allowing the material to stretch up to 800% strain. Fabrication in a binary glycerol:water solvent results in electrical resistance in the k omega range, a gauge factor of 0.84, and ionic conductivity on the scale of 10(-4) S cm(-1), making it a promising low-cost candidate for stretchable electronic materials. The study also investigates the relationship between improved electrical performance and polymer-polymer interactions using spectroscopic techniques.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wei-Jie Feng, Chengang Ji, L. Jay Guo
Summary: A full solution-based method is presented for fabricating multilayer thin film stacks for structural color applications, avoiding the need for high vacuum processes. Copper/silicon dioxide/copper (Cu/SiO2/Cu) and copper/titanium dioxide/copper (Cu/TiO2/Cu) are chosen as the model system due to their simple structure and tunable color. A systematic investigation is conducted to ensure good film quality and compatibility with previous layers. The manipulation of dielectric thickness and top Cu morphology on different substrates allows for the achievement of both primary and secondary colors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Thermodynamics
Ziqi Yu, Xiaopeng Li, Taehwa Lee, Hideo Iizuka
Summary: We demonstrate tunable thermal rectification enabled by near-field radiative heat transfer between two Weyl semimetal nanoparticles above graphene nanoribbons by rotating the particles and varying their loss factors. Through the rotation, the thermal rectification is significantly enhanced thanks to the nonreciprocal particles and the substrate that are more strongly coupled than the counterpart systems having reciprocal particles. Nonreciprocal particles induce spinning Poynting vectors, whose directions can be controlled by rotating the particles and can selectively couple to surface modes excited in the graphene nanoribbons.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Hansol Park, Jihyeon Heo, Bum Ho Jeong, Sewook Lee, Kyu-Tae Lee, Sanghyuk Park, Hui Joon Park
Summary: In this study, a newly designed HTM molecule with defect-passivation and photo-enhanced dipole characteristic is shown to improve the performance and stability of perovskite solar cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Mechanical
Xiaopeng Li, Ziqi Yu, Hideo Iizuka, Taehwa Lee
Summary: In this work, an LR-shunted mechanical resonator was studied for the observation of the exceptional point. By varying the shunting circuit parameters, the non-Hermitian degeneracy, namely the exceptional point, was supported. The design was verified through numerical analysis and experimental measurements, and the LR-shunted resonator allows for dynamic encircling of an exceptional point due to external stimuli.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Multidisciplinary Sciences
Jongmin Lee, Bum Ho Jeong, Eswaran Kamaraj, Dohyung Kim, Hakjun Kim, Sanghyuk Park, Hui Joon Park
Summary: Designing optoelectronic synapses with multispectral color-discriminating ability is crucial for neuromorphic visual systems. In this paper, authors propose a strategy to introduce RGB color-discriminating synaptic functionality into a two-terminal memristor regardless of the switching medium, and design a color image-recognizing CNN and light-programmable reservoir computing.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Wei-Jie Feng, Yian Cheng, L. Jay Guo
Summary: This paper presents a new approach to understanding the spectral behavior of a Fabry-Perot-type trilayer stack for subtractive structural color using temporal coupled mode analysis. The cavity-based analysis can accurately fit reflection spectra and predict color chromaticity, even without considering material dispersion. The research shows that maximizing both absorptive and radiative decay rates, while matching them, is the key to producing the most chromatic color.
Review
Nanoscience & Nanotechnology
Danyan Wang, Zeyang Liu, Haozhu Wang, Moxin Li, L. Jay Guo, Cheng Zhang
Summary: Recent years have seen rapid development in the field of structural coloration, which is generated from the interaction of nanostructures with light. Compared to traditional color generation methods, structural coloration offers unique advantages in terms of spatial resolution, operational stability, environmental friendliness, and multiple functionality. This review discusses the recent developments in structural coloration based on layered thin films and optical metasurfaces. It covers the fundamentals of color science, physical mechanisms for structural color generation, optimization methods for efficient structure parameter searching, fabrication techniques for large-scale and low-cost manufacturing, device designs for dynamic displaying, and diverse applications in printing, sensing, and advanced photovoltaics.
Article
Materials Science, Multidisciplinary
Jinfei Dai, Chenjing Zhao, Jie Xu, Hossein Roshan, Hua Dong, Francesco Di Stasio, Fang Yuan, Bo Jiao, Zhaoxin Wu
Summary: In this study, the performance of perovskite nanocrystal light emitting diodes (PNC-LEDs) was enhanced through rational device structure design and the application of high-performance perovskite nanocrystal emitting layers.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Jia-Hua Yeh, Suhendro Purbo Prakoso, Leon Lukhas Santoso, Shi-Ju Chen, Bryan Chiang, Ju-Chieh Cheng, Ru-Ning Zhang, Yu-Cheng Chiu
Summary: This study demonstrates the application of a renewable material called dextrin-SMS in the production of electret filters and transistor memory. Dextrin-SMS material can maintain prolonged electrostatic charges and has a relatively wide memory window, making it suitable for the production of biodegradable face masks and green electronics.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Ahmad Telfah, Qais M. Al-Bataineh, Ahmad A. Ahmad, Rund Abu-Zurayk, Carlos J. Tavares, Johannes Etzkorn, Farzad Foadian
Summary: Polyacrylic acid complexed with polyaniline (PAA/PANI) composite materials have the potential to form organic mixed ion-electron conductive (OMIEC) films, which can be used in optoelectronic and energy storage applications. The composite films are formed through an acid-base reaction, resulting in strong electrostatic interactions and intermolecular hydrogen bonds between PANI and PAA. The separation of PANI-rich domains from PAA-rich matrix in the composite films is observed. The electrical conductivity of the composite films is higher when the content of PANI is 33 wt%, due to the high ionic-electronic coupling at the interface between phase-separated regions.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Min-Chih Hou, Dian Luo, Yu-Ting Huang, Shun-Wei Liu, Chin-Wei Lu, Chih-Hao Chang, Hai-Ching Su
Summary: Light-emitting electrochemical cells (LECs) have great potential for novel emission applications, but their relatively low device efficiency hinders their competitiveness with other emission technologies. A study finds that increasing the concentration of small TiO2 nano-particles in the diffuser film can enhance light extraction and improve the device efficiency of LECs.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Qiaoli Niu, Yao Xu, Jun Yang, Wei Hua, Baoxiang Chai, Zequan Zhang, Yuhui Ma, Wenjin Zeng, Ana Flavia Nogueira, Ruidong Xia
Summary: By introducing CPB as a defect passivation agent in the perovskite precursor solution, the optoelectronic properties of perovskite films can be significantly improved and non-radiative carrier recombination can be effectively suppressed. CPB-modified perovskite solar cells exhibit lower trap-state density and stronger carrier migration capability, leading to enhanced power conversion efficiency and stability.
ORGANIC ELECTRONICS
(2024)
Article
Materials Science, Multidisciplinary
Hulya Ozturk Dogan, Fatma Yildirim, Zeynep Orhan, Ali Ben Ahmed, Mostefa Benhaliliba, Sakir Aydogan
Summary: In this study, efficient self-powered visible and UV photodetectors based on hybrid organic-inorganic materials were demonstrated. The photodetectors showed excellent UV detecting capability and good photoresponsivity.
ORGANIC ELECTRONICS
(2024)
