Article
Materials Science, Multidisciplinary
Rajeshkumar P. Khatri, Amitkumar J. Patel
Summary: Copper-doped Zinc Sulphide (Cu:ZnS) thin films were grown on silica slides with a different number of coats using a low-cost chemical bath deposition technique. Structural, optical, and electrical characterizations were performed, showing potential for applications as transparent conducting sulphide films for optoelectronic devices.
Article
Materials Science, Ceramics
Jindong Liu
Summary: Recently, correlated metallic oxide (CMO) has been proposed as a new design strategy for transparent conductors (TCs). Among these CMOs, SrVO3 with an electronic configuration of 3d1 has been widely studied. In this study, SrMoO3 films, a 4d2 perovskite CMO, were deposited on a flexible mica substrate using pulsed laser deposition. Results show that SrMoO3 films have superior optoelectronic performance compared to SrVO3, thanks to weaker electronic correlations and a 4d2 electronic configuration. Bending cyclic tests indicate that the flexible SrMoO3/mica film has high mechanical bending durability and stability. This 4d2 SrMoO3/mica film demonstrates great potential as a high-performance TC for flexible optoelectronics.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Avijit Dalal, Shyam Murli Manohar Dhar Dwivedi, Chiranjib Ghosh, Rini Lahiri, Mohamed Henini, Aniruddha Mondal
Summary: Electron beam evaporation technique was used to synthesize TiO2, Mg0.1Ti0.9O2, and Mg0.2Ti0.8O2 thin films on (100) n-type GaAs substrates. Various analyses were conducted to study the properties of the films, showing changes in bandgap energy and defect level transitions with increased Mg incorporation. The results provide insights into the effect of Mg concentration on the characteristics of the thin films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
A. M. Adam, A. K. Diab, Mohamed Tolan, Z. M. H. El-Qahtani, A. A. Refaat, Medhat A. El-Hadek, E. M. Elsehly, A. El-Khouly, Abdulaziz N. Alharbi, V Khovaylo, M. Ataalla
Summary: Thin layers of (Bi2Se3)(1-x)(Bi2Te3)(x) samples were prepared by vacuum thermal evaporation technique. The structure properties and optical properties of the synthesized films were characterized and discussed. The films exhibited growing transparency and varying optical band gap energy beyond the visible light region, and the incorporation of Bi2Te3 enhanced the light transmission in layered bismuth chalcogenides.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Ceramics
M. A. Awad, Mohamed Rabia
Summary: The current study aimed to synthesize bimetallic oxide thin films of TeO2-Sb2O4 with different Te weights, and various analyses were conducted to characterize their morphology, structure, optical and luminescent properties. The results showed that the Te contents affected the nucleation and growth rates, leading to changes in the morphology of the films. Increasing Te weight resulted in a decrease in NIR transmittance, direct and indirect band gaps, while the emission peaks of the mixed phase samples increased. The bimetallic alloy exhibited a broad and intense luminescence peak, promoting its potential applications in light emitting devices. The mixed TeO2-Sb2O4 films had longer average lifetime than the unmixed films, suggesting their usefulness in applications such as nanothermometers and time-resolved fluorometry.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Vinod S. Khairnar, Anil N. Kulkarni, Vishal V. Lonikar, Anil B. Gite, Mirtunjay Kumar, Dipak P. Patil, Deepak P. Kadam
Summary: This paper investigates the influence of electrolyte pH on the structural, electrochemical, and thermoelectric properties of electrodeposited Bi2Te3 films. Two samples exhibit high Seebeck coefficients comparable to other thermoelectric materials. The results suggest that the pH of electrolytes is a significant control parameter.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
T. Fix, G. Schmerber, J. -l. Rehspringer, M. V. Rastei, S. Roques, J. Bartringer, A. Slaoui
Summary: In this study, TbMnO3 (TMO) powders were fabricated and doped with In, Lu, Gd, Sm, Nd, Y. It was found that In and Nd atoms significantly reduce the cell size while maintaining an orthorhombic structure. Epitaxially grown h-TMO, h-In-TMO, h-Y-TMO, and h-YMO were successfully obtained using pulsed laser deposition (PLD). The optical properties of the films showed a direct bandgap of 1.5-1.6 eV for h-TMO and doped h-TMO films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Victor V. Petrov, Irina O. Ignatieva, Maria G. Volkova, Irina A. Gulyaeva, Ilya V. Pankov, Ekaterina M. Bayan
Summary: Transparent Al-doped ZnO films were synthesized by solid-phase pyrolysis and characterized by XRD, SEM, and TEM. The films exhibit wurtzite structure and have a uniform distribution of nanoparticles. The introduction of 1% Al results in a narrowed band gap and improved response time to radiation.
Review
Chemistry, Multidisciplinary
Md Abdul Majed Patwary, Md Alauddin Hossain, Bijoy Chandra Ghos, Joy Chakrabarty, Syed Ragibul Haque, Sharmin Akther Rupa, Jamal Uddin, Tooru Tanaka
Summary: This review discusses the potential of CuxO nanostructured thin films in transparent and flexible electronics, introduces the advantages of the SILAR technique, and analyzes various factors affecting the fabrication performance of CuxO films.
Review
Chemistry, Multidisciplinary
Nguyen Ngan Nguyen, Hansol Lee, Hyo Chan Lee, Kilwon Cho
Summary: Organic semiconductors and graphene heterostructures have great potential in improving optical and electrical properties. However, the unpredictable assembly and variation in performance have been major challenges. We have elucidated the underlying mechanism and developed a method to control the template effect of graphene on organic semiconductors.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Physical
Alice Marciel, Manuel Graca, Alexandre Bastos, Luiz Pereira, Jakka Suresh Kumar, Joel Borges, Filipe Vaz, Marco Peres, Sergio Magalhaes, Katharina Lorenz, Rui Silva
Summary: Molybdenum oxide thin films were deposited on both stiff and flexible substrates using reactive DC magnetron sputtering. By varying the O2/Ar flow rate ratio, different levels of crystallinity and conductivity were achieved, with noticeable changes in transparency and dielectric behavior. The films showed a compact and featureless morphology, with thickness ranging from 190 to 910 nm depending on the deposition time. Further analysis through XPS, RBS, and density measurements confirmed the structure of the films and their optical properties.
Article
Chemistry, Multidisciplinary
Bhubesh Chander Joshi, Aadarsh Kumar Chaudhri
Summary: In this study, Cu-doped ZnO thin films were prepared using the sol-gel method. The doping concentration was found to affect the crystallite size, band gap, and conductivity of the films. The doped films showed p-type conductivity initially but degraded with time. Ambient-exposed films converted to n-type, while vacuum-placed films maintained p-type behavior. It is suggested that if these films are well prepared, protected, and properly passivated, they can be used for optoelectronics devices.
Review
Nanoscience & Nanotechnology
Prosper Ngabonziza
Summary: This paper reviews recent developments in quantum transport, focusing on the contribution of topological insulator boundary states to thermoelectricity in Bi2Te3 thin films. The ability to grow high-quality epitaxial films and fabricate sophisticated devices opens up possibilities for exploring topological quantum devices and improving the thermoelectric properties of Bi2Te3. The potential of topological states to enhance thermoelectric performance and the current progress in this area are discussed.
Article
Chemistry, Physical
Kosuke O. Hara, Ryota Takagaki, Keisuke Arimoto, Noritaka Usami
Summary: In this study, the microstructure and its effects on the electrical and optoelectronic properties of BaSi2 films grown by close-spaced evaporation were investigated. It was found that using Si(100) substrates, increasing film thickness and growth temperature can decrease the density of epitaxial domain boundaries, improve carrier lifetime, and enhance the performance of BaSi2 films for photovoltaic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
P. Velusamy, Xinghui Liu, R. Ramesh Babu, M. Sathiya, Norah Salem Alsaiari, Fatimah Mohammed Alzahrani, M. Tariq Nazir, Elangovan Elamurugu, Fuchun Zhang
Summary: Chromium doped CdO films were prepared by chemical spray deposition and characterized for their optical, electrical, structural, and microstructural properties. The films exhibited cubic crystal structure with growth along the (111) plane. Uniform distribution of grains and varied surface roughness were observed based on atomic force microscopy analysis. The films showed high optical transmittance (>75%) in the visible-near infrared region, with a maximum band gap of 2.35 eV for 1.0 wt% Cr-doping. Electrical measurements confirmed degeneracy nature and n-type semi-conductivity, with higher Cr-dopant percentage leading to increased carrier density, carrier mobility, and dc-conductivity. A remarkable response to formaldehyde gas (74.39%) was observed for 0.75 wt% Cr-doping.
Review
Chemistry, Multidisciplinary
Min Hong, Meng Li, Yuan Wang, Xiao-Lei Shi, Zhi-Gang Chen
Summary: This article provides a comprehensive review on GeTe-based materials, covering the fundamental analysis, fabrication methods, strategies for enhancing electronic transports and strengthening phonon scatterings, device assembly and performance, as well as future research directions. It highlights the high figure of merit and energy conversion efficiency of GeTe materials, and proposes insights for the development of broader thermoelectric materials.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Qin-Xue Hu, Wei-Di Liu, Li Zhang, Wei Sun, Han Gao, Xiao-Lei Shi, Yan-Ling Yang, Qingfeng Liu, Zhi-Gang Chen
Summary: High power factor and excellent bending resistance are achieved in an in situ grown 10 mol% SWCNTs/Ag2}ySe film. The high power factor is attributed to the enhanced carrier concentration and enlarged effective mass induced by the additional interstitial Ag. Moreover, the film exhibits excellent bending resistance and can be used in a flexible thermoelectric power generator with high output power.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Xingyu Liu, Xiao-Lei Shi, Li Zhang, Wei-Di Liu, Yanling Yang, Zhi-Gang Chen
Summary: This study develops a one-step post-treatment method using a water-based solution to improve the power factor of PEDOT:PSS films. By using a DMAC solution and LAA reducing agent, the electrical conductivity and Seebeck coefficient of the films are enhanced, resulting in an improved power factor. The research also demonstrates a flexible thermoelectric device assembled with PEDOT:PSS films showing high output power at a temperature difference of 25 K.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Peng Chen, Qi Yao, Junqi Xu, Qiang Sun, Alexander J. Grutter, Patrick Quarterman, Purnima P. Balakrishnan, Christy J. Kinane, Andrew J. Caruana, Sean Langridge, Ang Li, Barat Achinuq, Emily Heppell, Yuchen Ji, Shanshan Liu, Baoshan Cui, Jiuming Liu, Puyang Huang, Zhongkai Liu, Guoqiang Yu, Faxian Xiu, Thorsten Hesjedal, Jin Zou, Xiaodong Han, Haijun Zhang, Yumeng Yang, Xufeng Kou
Summary: Intercalating ferromagnetic MnTe layers into the framework of MnBi2Te4 can create ferromagnet-intercalated MnBi2Te4 superlattices with tunable magnetic exchange interactions. By using molecular beam epitaxy, we have created [(MBT)(MnTe)(m)](N) superlattices and investigated their magnetic interaction properties using polarized neutron reflectometry and magnetoresistance measurements. The incorporation of ferromagnetic spacers adjusts the antiferromagnetic interlayer coupling of the MnBi2Te4 layers through the exchange-spring effect at MnBi2Te4/MnTe hetero-interfaces. The thickness of MnTe can be used to modulate the relative strengths of the ferromagnetic and antiferromagnetic order, and the superlattice periodicity can tailor the spin configurations of the synthesized multilayers.
NATURE ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Xingkai Duan, Wei-Di Liu, Yuezhen Jiang, Xiaoli Ke, Konggang Hu, Xiao-Lei Shi, Zhi-Gang Chen
Summary: In this study, it was discovered that the presence of Ta-rich localized areas and Ta substitution in the CrSi2 matrix led to lattice distortions and strain fields, resulting in strengthened phonon scattering and an ultralow lattice thermal conductivity in Cr0.94Ta0.06Si2 at -750K. Moreover, Cr0.94Ta0.06Si2 exhibited a relatively high power factor and figure of merit at -750K. This finding is of great significance for guiding the development of wide bandgap high-efficiency thermoelectric materials.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Electrical & Electronic
Zihan Li, Shanshan Liu, Jiabao Sun, Jiayi Zhu, Yanhui Chen, Yunkun Yang, Linfeng Ai, Enze Zhang, Ce Huang, Pengliang Leng, Minhao Zhao, Xiaoyi Xie, Yuda Zhang, Nesta Benno Joseph, Rajdeep Banerjee, Awadhesh Narayan, Jin Zou, Wenqing Liu, Xiaodong Xu, Faxian Xiu
Summary: The Curie temperature of Fe5+xGeTe2 thin films can be modulated from 260 to 380 K via iron doping, allowing the two-dimensional material to be used to create planar spiral inductors and low-pass Butterworth filters.
NATURE ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Vincenzo Pecunia, S. Ravi P. Silva, Jamie D. Phillips, Elisa Artegiani, Alessandro Romeo, Hongjae Shim, Jongsung Park, Jin Hyeok Kim, Jae Sung Yun, Gregory C. Welch, Bryon W. Larson, Myles Creran, Audrey Laventure, Kezia Sasitharan, Natalie Flores-Diaz, Marina Freitag, Jie Xu, Thomas M. Brown, Benxuan Li, Yiwen Wang, Zhe Li, Bo Hou, Behrang H. Hamadani, Emmanuel Defay, Veronika Kovacova, Sebastjan Glinsek, Sohini Kar-Narayan, Yang Bai, Da Bin Kim, Yong Soo Cho, Agne Zukauskaite, Stephan Barth, Feng Ru Fan, Wenzhuo Wu, Pedro Costa, Javier del Campo, Senentxu Lanceros-Mendez, Hamideh Khanbareh, Zhong Lin Wang, Xiong Pu, Caofeng Pan, Renyun Zhang, Jing Xu, Xun Zhao, Yihao Zhou, Guorui Chen, Trinny Tat, Il Woo Ock, Jun Chen, Sontyana Adonijah Graham, Jae Su Yu, Ling-Zhi Huang, Dan-Dan Li, Ming-Guo Ma, Jikui Luo, Feng Jiang, Pooi See Lee, Bhaskar Dudem, Venkateswaran Vivekananthan, Mercouri G. Kanatzidis, Hongyao Xie, Xiao-Lei Shi, Zhi-Gang Chen, Alexander Riss, Michael Parzer, Fabian Garmroudi, Ernst Bauer, Duncan Zavanelli, Madison K. Brod, Muath Al Malki, G. Jeffrey Snyder, Kirill Kovnir, Susan M. Kauzlarich, Ctirad Uher, Jinle Lan, Yuan-Hua Lin, Luis Fonseca, Alex Morata, Marisol Martin-Gonzalez, Giovanni Pennelli, David Berthebaud, Takao Mori, Robert J. Quinn, Jan-Willem G. Bos, Christophe Candolfi, Patrick Gougeon, Philippe Gall, Bertrand Lenoir, Deepak Venkateshvaran, Bernd Kaestner, Yunshan Zhao, Gang Zhang, Yoshiyuki Nonoguchi, Bob C. Schroeder, Emiliano Bilotti, Akanksha K. Menon, Jeffrey J. Urban, Oliver Fenwick, Ceyla Asker, A. Alec Talin, Thomas D. Anthopoulos, Tommaso Losi, Fabrizio Viola, Mario Caironi, Dimitra G. Georgiadou, Li Ding, Lian-Mao Peng, Zhenxing Wang, Muh-Dey Wei, Renato Negra, Max C. Lemme, Mahmoud Wagih, Steve Beeby, Taofeeq Ibn-Mohammed, K. B. Mustapha, A. P. Joshi
Summary: Ambient energy harvesting has the potential to contribute to sustainable development and power the growth of smart devices in the Internet of Things. Innovative materials are crucial for efficient energy conversion, and this Roadmap provides insights into recent advances and challenges in the field. Promising directions for future research are outlined to fully harness the potential of energy harvesting materials.
JOURNAL OF PHYSICS-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Chunchun Song, Xiao-Lei Shi, Lin Pan, Wei -Di Liu, Qiang Sun, Meng Li, Chunhua Lu, Qingfeng Liu, Yifeng Wang, Zhi-Gang Chen
Summary: This study utilizes SnSe as multifunctional micro/nanoinclusions to achieve higher thermoelectric performance in polycrystalline BTS. The 2D-structured SnSe reduces the average size of BTS powders and improves the anisotropy of the bulk materials, leading to enhanced carrier mobility and electrical conductivity. Introducing p-type SnSe into n-type BTS enhances the temperature range for high Seebeck coefficients, and the low lattice thermal conductivity of SnSe micro/nanoinclusions suppresses the overall thermal conductivity of the hybrid bulk materials, resulting in competitive figure-of-merit values and great potential for practical applications.
Article
Materials Science, Multidisciplinary
Wenxuan Wang, Yichen Liu, Yifan Xue, Ziqi Yin, Wen Lee, Zhi-Gang Chen, Lei Yang, Kunihito Koumoto, Jack Yang, Wenxian Li, Sean Li
Summary: Suppression of thermal conductivity through particle size reduction is commonly used to enhance the thermoelectric performance of nanostructured materials. This study successfully synthesized a novel structure of CCO material by combining high-energy ball milling and spark plasma sintering techniques, which showed high electrical conductivity and low thermal conductivity, resulting in a high zT value.
Article
Chemistry, Physical
Dou Li, Xiao-Lei Shi, Jiaxi Zhu, Meng Li, Jianyuan Wang, Wei-Di Liu, Qinghua Zhao, Hong Zhong, Shuangming Li, Zhi-Gang Chen
Summary: Realizing high thermoelectric performance in CoSb3 skutterudite-based thin films and their devices is historically challenging. However, through advanced pulsed laser deposition, a record-high ZT of 1.1 is achieved at 683 K in an n-type Ce0.3Ni1.5Co2.5Sb12 thin film. The high ZT is attributed to the Ce-filling, metal-featured nanoinclusions, and Ni-doping that contribute to high electrical conductivity and energy filtering effect at the dense interfaces, leading to a large Seebeck coefficient. A new-type CoSb3 thin-film-based device is also successfully fabricated with high power density.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Hao Wu, Xiao-Lei Shi, Yuanqing Mao, Meng Li, Wei-Di Liu, De-Zhuang Wang, Liang-Cao Yin, Min Zhu, Yifeng Wang, Jingui Duan, Qingfeng Liu, Zhi-Gang Chen
Summary: This study designs a Ag2S0.5Se0.5 material alloyed with 0.5 mol.% Ag2Te, which demonstrates high thermoelectric performance and excellent plasticity. The introduction of Ag2Te optimizes the carrier concentration and mobility of the matrix, while inducing amorphous phase boundaries to enhance overall plasticity.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Hao Wu, Xiao-lei Shi, Jingui Duan, Qingfeng Liu, Zhi-Gang Chen
Summary: This review provides a comprehensive summary of the progress, challenges, and outlook for Ag2Se-based thermoelectric materials. The fundamentals of Ag2Se, including its physical properties and mechanical characteristics, are presented. Advanced strategies for enhancing the thermoelectric and mechanical properties of Ag2Se-based materials are discussed, along with the development of device designs and novel applications. Controversies, challenges, and future prospects for Ag2Se-based thermoelectrics are also addressed.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Review
Electrochemistry
Tianyi Cao, Xiao-Lei Shi, Meng Li, Boxuan Hu, Wenyi Chen, Wei-Di Liu, Wanyu Lyu, Jennifer MacLeod, Zhi-Gang Chen
Summary: This article summarizes the novel designs, properties, and applications of Bi2Te3-based thermoelectric devices in different contexts and discusses the challenges and outlook for these devices. It will guide the future development of Bi2Te3-based thermoelectric devices for broader and more practical applications.
Article
Chemistry, Multidisciplinary
Wei-Di Liu, Liang-Cao Yin, Lei Li, Qishuo Yang, De-Zhuang Wang, Meng Li, Xiao-Lei Shi, Qingfeng Liu, Yang Bai, Ian Gentle, Lianzhou Wang, Zhi-Gang Chen
Summary: Nanoengineering is an effective strategy to optimize the formation of sub-nano boundary regions at grain boundaries, which can enhance phonon scattering, reduce lattice thermal conductivity and improve thermoelectric material performance.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Environmental
Meng Li, Sheng-Duo Xu, Wan-Yu Lyu, Qiang Sun, Min Hong, Yuan Wang, Ji-Xing Liu, Yu Yin, Jin Zou, Zhi-Gang Chen
Summary: This work reports on the thermoelectric properties of (CaTe)(x)(GeTe)(100-x) materials, which consist of CaTe nanoinclusions and a GeTe matrix. By increasing the Ca fraction, the figure-of-merit and heat-to-electricity efficiency of GeTe are significantly enhanced. The study provides insights into the design and development of high-performance GeTe thermoelectric materials.
CHEMICAL ENGINEERING JOURNAL
(2023)
