Article
Materials Science, Ceramics
Masaki Wada, Kazuki Mitsui, Yukihide Ishibashi, Akira Saitoh, Keiji Tanaka
Summary: In this study, the birefringence in As2S3 glass induced by uniaxial stress or linearly-polarized light was comparatively investigated. The negative photoelastic constant in As2S3 resulted in decreased refractive index under applied stress, in contrast to SiO2 glass. Similarly, the negative photoinduced birefringence in As2S3 indicated a decreased refractive index parallel to the electric field of the excitation light. These similarities suggest a common structural origin, possibly related to anisotropic segmental layer structures formed by mechanical and photo-structural atomic motions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Physics, Applied
Akira Saitoh, Yukihide Ishibashi, Masaki Wada, Kazuki Mitsui, Keiji Tanaka
Summary: Optical fibers made of chalcogenide glass, specifically As2S3, can be bent sharply by the side irradiation of polarized light. The direction of bending depends on the polarization of the light. This bending phenomenon is not affected by thermal effects and is believed to be caused by photo-induced optomechanical forces and fluidity. This discovery has the potential to be used in the development of photo-manipulation methods for chalcogenide-glass fibers, particularly for applications in all-optical switching/modulation devices working at infrared wavelengths.
APPLIED PHYSICS EXPRESS
(2023)
Article
Chemistry, Physical
Kangning Liu, Yan Kang, Haizheng Tao, Xianghua Zhang, Yinsheng Xu
Summary: This study introduces Se element to stabilize Ge-As-Te glass and successfully prepares Ge-As-Se-Te (GAST) glass with excellent thermal stability and wide infrared transmission window, making it an ideal material for infrared optics.
Article
Physics, Applied
Yaw S. Obeng, Nhan V. Nguyen, Papa K. Amoah, Jungjoon Ahn, Mikhail Y. Shalaginov, Juejun Hu, Kathleen A. Richardson
Summary: Broadband dielectric spectroscopy (BDS) was used to study the effects of low fluence UV-irradiation on Ge2Sb2Se5 thin films. The study found that the irradiation induced reversible changes in film morphology and microwave scattering signature. Additionally, annealing the photo-exposed material resulted in the formation of a thermally stable layer. BDS analysis provided new insights into the nature of photo-induced processes in chalcogenide films.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Ceramics
Kangkang Wang, Wenfeng Wang, Changgui Lin, Xiang Shen, Shixun Dai, Feifei Chen
Summary: Transparent chalcogenide glass ceramics (ChGCs) based on a binary germanium-sulfur (Ge-S, GS) chalcogenide system were synthesized and embedded with GeS2 nanocrystals. The study showed that this material has a smaller optical bandgap energy, higher mechanical strength, and significantly enhanced third-order optical nonlinearity, making it suitable for optical limiting applications.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
Dayanand Kumar, Aftab Saleem, Lai Boon Keong, Yeong Her Wang, Tseung-Yuen Tseng
Summary: In this letter, a novel invisible bilayer ZnSnOy/ZnSnOx memristor for photo sensing is presented. The device exhibits excellent photo sensing features and has the potential to be used in optical to electronic memory devices or always-on continuous measurement optoelectronic sensors.
IEEE ELECTRON DEVICE LETTERS
(2022)
Review
Nanoscience & Nanotechnology
Hongyu Tang, Sergey G. Menabde, Tarique Anwar, Junhyung Kim, Min Seok Jang, Giulia Tagliabue
Summary: In this review, different strategies for photo-modulation of electrical and optical properties of graphene are surveyed, including photogating, generation of hot carriers, and thermo-optical effects. The role of nanophotonic strategies in maximizing these effects is briefly discussed, and promising fields for application of these techniques are highlighted.
Article
Optics
Reena Gadhwal, Hukum Singh, Ambika Devi, Kapil Kumar
Summary: In this article, spectral studies and optical nonlinearities of optical grade thin films fabricated from nano colloidal solutions of Ge20Te75Bi5 chalcogenide glass are reported. The emission peaks and bandgap of the films vary with the concentration and grain size of the nanocomposites. The presence of reverse saturable absorption is confirmed and the third-order optical nonlinearities can be enhanced for usage in nonlinear optical systems.
OPTICS AND LASER TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Wilfried Blanc, Yong Gyu Choi, Xianghua Zhang, Marcelo Nalin, Kathleen A. Richardson, Giancarlo C. Righini, Maurizio Ferrari, Animesh Jha, Jonathan Massera, Shibin Jiang, John Ballato, Laeticia Petit
Summary: Since the 1960s, photonics has become an integral part of modern life, thanks to the invention and development of lasers. Glass, being versatile and easily fabricated, has played a crucial role in various applications related to the generation, transmission, modulation, amplification, conversion, and detection of light. This paper reviews the past, present, and future of photonic glasses in honor of the United Nations International Year of Glass 2022.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Z. A. Alrowaili, M. M. Soraya, T. A. Alsultani, Ammar Qasem, E. R. Shaaban, Mohammed Ezzeldien
Summary: The study focuses on the optical properties of As40Se60-xSnx thin films. It was found that the refractive index of the thin films increases with the Sn content, while the energy gap decreases as Sn content increases. Further investigation into the physical characteristics of the films was done through the approach of chemical bond, and optical dispersion, phase velocity, and group velocity were discussed in detail.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Shangsheng Guan, Shengzhi Sun, Dan Chen, Jiahui Zhang, Shiliang Kang, Tiefeng Xu, Changgui Lin
Summary: Novel chalcogenide glasses of the pseudo-binary (100-x)Sb2S3-xPbI(2) system were synthesized and characterized, with the [SbI3] structural units identified as promoting the forming ability of the glasses. The results provide valuable insights for developing novel LWIR chalcogenide glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Nengbing Long, Yanqing Fu, Tianxiang Xu, Dashuang Ding, Shaoqian Zhang, Shengzhi Sun, Shiliang Kang, Tiefeng Xu, Shixun Dai, Qiuhua Nie, Changgui Lin
Summary: The confinement of CsPbX3 perovskite nanocrystals in a stabilized inorganic glass matrix improves their stability and allows tuning of emission peaks, showing potential for applications in the optoelectronic field. The development of in situ nanocrystallization strategy successfully precipitates CsPbBr3-xIx NCs with arbitrary I/Br ratio in a carefully designed chalcogenide glass matrix, showcasing homogenous distribution within the glass matrix and potential applications in the photoelectronic fields. The presence of structural defects in the NCs leads to a short PL decay life, but sheds light on the future potential for these materials.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Rittwick Mondal, Dipankar Biswas, Sweta Paul, Anindya Sundar Das, Chiranjib Chakrabarti, Debasish Roy, Subhratanu Bhattacharya, Soumyajyoti Kabi
Summary: The study investigates the impact of sulphur content on the structural, linear, and non-linear optical properties, as well as dielectric behavior of amorphous chalcogenide glassy materials. The incorporation of sulphur was found to increase the bandgap energy and affect various optical parameters. Analysis using topological concept revealed correlations between mean coordination numbers and obtained parameters, while the study showed that the conductivity relaxation process is non-Debye type.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Thermodynamics
Ravi P. Tripathi, M. A. Alvi, Shamshad A. Khan
Summary: The research focused on investigating the thermal, optical, and electrical properties of Se85In15-xBix alloys in bulk and thin film forms. Various parameters such as melting temperature, crystallization temperature, glass transition temperature, and different stability parameters were evaluated. The study also considered the impact of Bi content on alloy properties through different testing methods, providing valuable insights for applications and further research.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Chemistry, Analytical
Bahareh Badamchi, Al-Amin Ahmed Simon, Maria Mitkova, Harish Subbaraman
Summary: A novel chalcogenide glass-capped optical fiber temperature sensor is demonstrated, which can operate in harsh environments and respond rapidly to temperature changes. By utilizing the heat-induced phase change property of ChGs, the sensor accurately measures the temperature at the sensing node and interprets the temperature profile in real-time using an array structure. The unique radiation-hardness property of ChGs makes the devices compatible with high-temperature and high-radiation environments.
Article
Chemistry, Physical
Surabhi Mishra, Pravin Kumar Singh, Rajesh K. Yadav, Ahmad Umar, Pooja Lohia, D. K. Dwivedi
Summary: This paper investigates the linear and nonlinear properties of Sb-doped Ge-Se-Te glasses for optoelectronic applications, including refractive index, optical conductivity, dielectric constants, and energy losses. Various models and formulas were used to analyze the experimental data and provide a comprehensive understanding of the samples.
Article
Thermodynamics
Priyanka Jaiswal, Vandita Rao, Pravin Kumar Singh, Pooja Lohia, D. K. Dwivedi
Summary: Carbon nanotube-added Cu5Se75Te10In10 glassy composites have been successfully developed through the melt quench mechanism. SEM and DSC were used to study the composition and glass transition kinetics, revealing that the glass transition temperature increases with CNT concentration. Activation energy of glass transition mechanism was determined using Kissinger's and Moynihan's relations, and thermal characteristics were studied using various quantitative methods.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Optics
Sadanan, Puli Sunny Babu, Pravin Kumar Singh, A. K. Thakur, D. K. Dwivedi
Summary: By optimizing the thickness of the absorber and buffer layers and using the appropriate temperature and back surface field, the photovoltaic performance of CZTSSe solar cells can be significantly improved.
Article
Energy & Fuels
Sadanand, Pravin Kumar Singh, Shambhavi Rai, Pooja Lohia, D. K. Dwivedi
Summary: This article presents the modeling outcomes of novel and third-generation heterojunctions thin-film solar cells, focusing on the performance and optimization methods of promising photovoltaic absorber materials such as CZTS, CuSbS2, and CuSbSe2. Further analysis and study of band alignment, material parameters, and device characteristics aim to improve the efficiency and reproducibility of these solar cells.
Article
Materials Science, Multidisciplinary
Shivangi Pandey, Sadanand, Parvin Kumar Singh, Pooja Lohia, D. K. Dwivedi
Summary: The study examined the different buffer layers for SnS-based solar cells and found that CdS can be used as an efficient buffer layer while ZnS is a non-toxic alternative.
TRANSACTIONS ON ELECTRICAL AND ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Sachin Singh, Anuj K. Sharma, Pooja Lohia, D. K. Dwivedi, Pravin Kumar Singh
Summary: This article presents a highly sensitive surface plasmon resonance biomedical sensor based on a nanostructure composed of barium titanate, MXene, and nickel. The sensor exhibits optimized performance parameters and penetration depth, making it a promising tool for biomedical applications.
Article
Optics
Shivangani, Pooja Lohia, Pravin Kumar Singh, Sachin Singh, D. K. Dwivedi
Summary: In this study, a new structure of surface plasmon resonance sensor is proposed, which incorporates a sandwiched layer of Al2O3 between silver and nickel films, as well as a two-dimensional heterostructure material. Numerical simulation is performed to calculate the sensitivity of the sensor to refractive index changes, as well as other performance parameters. The results show that the proposed sensor structure achieves enhanced sensitivity in the visible region.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Physics, Multidisciplinary
Sachin Singh, Anuj K. K. Sharma, Pooja Lohia, D. K. Dwivedi, Vipin Kumar, Pravin Kumar Singh
Summary: In this study, a highly angular sensitive surface plasmon resonance (SPR) biosensor has been developed for the detection of cancer cells. The biosensor structure is based on the Kretschmann configuration and utilizes an angular interrogation technique. It has the potential to detect various types of cancer cells with refractive index alterations ranging from 1.360 to 1.390. The biosensor design, which consists of multiple layers including CaF2 prism, silver metal, bismuth telluride (Bi2Te3), and MXene (Ti3C2Tx) layers, has been optimized for performance parameters such as angular sensitivity, quality factor, detection accuracy, and electric field intensity distribution.
Article
Chemistry, Analytical
Ahmad Umar, Pravin Kumar Sadanand, Pravin Kumar Singh, D. K. Dwivedi, Hassan A. Algadi, Ahmed Ibrahim, Mohsen A. M. Alhammai, Sotirios Baskoutas
Summary: Solar cells based on lead-free perovskite have shown great potential. In this study, a lead-free perovskite solar cell was modeled using simulation software, and various parameters were optimized to achieve the highest power-conversion efficiency of 33.46%. The findings suggest that optimizing the thickness and doping density can lead to optimal solar cell performance.
Article
Engineering, Electrical & Electronic
Rajnish Raj, Pooja Lohia, D. K. Dwivedi, Pravin Kumar Singh, Arpit Verma, B. C. Yadav
Summary: This research presents a synthesis approach for a highly responsive and cost-effective Ge-Sb-S nanomaterial for photodetection system. The characterization of the samples was performed using various techniques including XRD and SEM. The photodetector device made of (GeS2)(40)(Sb2S3)(60) showed the highest responsivity, EQE, and detectivity at a bias potential of 5 V.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Optics
Sachin Singh, Sushant Pandey, Sapana Yadav, Rajesh Kumar Yadav, Pravin Kumar Singh, Pooja Lohia, D. K. Dwivedi
Summary: In this study, a comparative investigation of surface plasmon resonance (SPR)-based sensors designed with gold (Au), aluminium (Al), and silver (Ag) is conducted to enhance the device performance. Ni-antimonene layer is used in the sensor configuration to improve the sensitivity. The performance parameters of the SPR sensor, such as sensitivity, detection accuracy, and quality factor, are evaluated and compared for Ag, Au, and Al metals.
JOURNAL OF OPTICS-INDIA
(2023)
Review
Materials Science, Multidisciplinary
Sharanya Kandula, Pravin Kumar Singh, Gun Anit Kaur, Ashutosh Tiwari
Summary: Cancer is a global health issue and innovative treatments are in high demand. Smart drug delivery systems have gained popularity for improving the effectiveness and safety of cancer treatments. This article provides an update on the state of smart drug delivery systems for cancer, discussing the significance of drug delivery, targeted delivery methods, current issues, and future directions.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
Shivam Singh, Sachin Singh, Pravin Kumar Singh, Rajesh Kumar Yadav, Pooja Lohia, D. K. Dwivedi
Summary: An ultra-sensitive bimetallic surface plasmon resonance biosensor is proposed for detecting malaria disease at different stages. The device structure is based on the Kretschmann configuration and consists of multiple layers, including BK7 prism, silver (Ag) metal layer, zinc telluride (ZnTe), and lead titanate (PbTiO3). The sensor's performance is based on the angular interrogation method. It can detect various stages of malaria disease and covers a wide range of refractive index (RI) with optimized angular sensitivity of 253 degrees/RIU. The proposed sensor is particularly effective for detecting the ring stage and various cancerous cells.
Article
Nanoscience & Nanotechnology
Ahmad Umar, Pravin Kumar Singh, Sadanand, D. K. Dwivedi, Ahmed A. Ibrahim, Mohsen A. M. Alhamami, Hussam Qasem, Sheikh Akbar, S. Baskoutas
Summary: To overcome the toxicity of lead, researchers have investigated lead-free perovskite solar cells and conducted studies to improve their power conversion efficiency and sustainability. This study explores the effects of NiO nanocomposite as a hole transport layer on the performance of the solar cells, and investigates the impact of factors such as absorber layer thickness, transport layer thickness, bandgap, and operating temperature.
SCIENCE OF ADVANCED MATERIALS
(2022)
Article
Physics, Multidisciplinary
V Rao, P. K. Singh, P. Lohia, D. K. Dwivedi
Summary: The paper discusses the kinetic variables of crystallization kinetics in Se-Te-Ge glassy alloys. Various methods were used to analyze the structure, phase transition, and kinetic parameters of the alloys.
INDIAN JOURNAL OF PHYSICS
(2022)
