Article
Energy & Fuels
Abdullah Atilgan, Abdullah Yildiz
Summary: The development of novel bilayer photoanodes is crucial for efficient dye-sensitized solar cells. In this study, a homojunction photoanode consisting of undoped and Ni-doped TiO2 layers was prepared. By tuning the location of the doped layer, the photoconversion efficiency was greatly improved. The bilayer structure enhanced light absorption, resulting in increased short circuit current and open-circuit voltage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Kang-Hun Lee, Seung-Hee Han, Ana Chuquer, Hwa-Young Yang, Jaehi Kim, Xuan-Hung Pham, Won-Ju Yun, Bong-Hyun Jun, Won-Yeop Rho
Summary: This study investigates the change in power conversion efficiency (PCE) of DSSCs by introducing Au nanoparticles (Au NPs) and a scattering layer. It was found that Au NPs enhance electron generation and the scattering layer improves light harvesting, resulting in a significant increase in the PCE of DSSCs. synergistically, the combination of Au NPs and a scattering layer shows promising potential for enhancing electron generation and light harvesting abilities in DSSCs.
Article
Chemistry, Physical
Hugo G. Lemos, Rodrigo M. Ronchi, Guilherme R. Portugal, Jessica H. H. Rossato, Gurpreet S. Selopal, David Barba, Everaldo C. Venancio, Federico Rosei, Jeverson T. Arantes, Sydney F. Santos
Summary: Dye-sensitized solar cells (DSSCs) are a promising technology for clean energy conversion. This study focuses on enhancing the efficiency of DSSCs by optimizing charge transport and non-radiative carrier recombination. The introduction of Ti3C2Tx MXene into the photoanode improves electron transport and increases the energy-to-current conversion of DSSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
N. Mohsenzadegan, E. Nouri, M. R. Mohammadi
Summary: The improvement of photoconversion efficiency and operational stability of dye-sensitized solar cells (DSSCs) under environmental conditions is a major challenge for commercialization. Two approaches, namely increasing light scattering via embedding mesoporous TiO2 beads and delaying electrolyte leakage using gel polymer electrolyte, were employed to address this challenge. The highest photoconversion efficiency of 9.8% was achieved for the photoanode based on mesoporous TiO2 beads in the presence of gel polymer electrolyte, demonstrating longer operational stability under realistic ambient conditions.
Article
Energy & Fuels
Bingyu Lei, Neil Robertson
Summary: A new method for the immobilization of TiO2 mesocrystals has been developed in this study. The immobilized TiO2 possesses high dye pickup capability and optimal electron transport ability, making it suitable for dye-sensitized solar cells.
Article
Environmental Sciences
Muhammad Umair Shahid, Norani Muti Mohamed, Ali Samer Muhsan, Siti Nur Azella Zaine, Mehboob Khatani, Asfand Yar, Waqar Ahmad, Muhammad Babar Hussain, Asma A. Alothman, Mohammed Sheikh Saleh Mushab
Summary: Dye-sensitized solar cells (DSSCs) have attracted attention for their low-cost processing, ability to work in diffuse light, and potential for building integrated photovoltaics (BIPV). However, their efficiency is low due to multiple issues. This study introduces a graphene/TiO2 scattering layer that enhances electron transport and light scattering. Results show that with 0.01 wt% graphene, a 33% higher photoconversion efficiency (PCE) was achieved compared to without scattering layer. However, PCE decreases at >0.01 wt% graphene due to loss of diffuse reflectance and higher optical absorption.
Article
Materials Science, Multidisciplinary
Khaled HamdaninAff, Samia BelhoussenAff, Fatma Zohra TighiltnAff, Kahina LasminAff, Denis ChaumontnAff, Sabrina Sam
Summary: This study investigates the influence of TiO2 morphology on the performance of dye-sensitized solar cells. It is found that a proper content of nanotubes effectively connects with nanoparticles, facilitating charge transport.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Chemistry, Multidisciplinary
Deepak Joshy, Soumya B. Narendranath, Yahya A. Ismail, Pradeepan Periyat
Summary: TiO2 nanomaterials have been widely studied as photoanode materials in dye-sensitized solar cells due to their non-toxicity, high electron transport rates, and fine tuneable band gap. This review focuses on the modification of TiO2 photoanodes through doping and morphological variations, and highlights the impact of various morphologies on photoanode design.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Ying Tao, Zhong Ma, Wenchao Wang, Chi Zhang, Lanlan Fu, Qiong Zhu, Yanliu Li, Guisheng Li, Dieqing Zhang
Summary: A new semiconductor/cocatalyst, Ni2P sensitized TiO2 nanotube arrays photoanode (Ni2P/TiO2-NTAs), is developed for photoelectrocatalytic urea oxidation reaction (PEC-UOR) with high efficiency. The 1D TiO2-NTAs structure accelerates urea molecules diffusion and promotes CO2 gas release at the electrode interface. Meanwhile, Ni2P is also beneficial to urea molecule absorption and CO2 desorption and enables to lower the energy barrier for amine (N-H) dehydrogenation. Furthermore, the robust interfacial charge transfer pathway between Ni2P and TiO2 interface promotes the separation of photogenerated electrons and holes.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Energy & Fuels
Mahesh Dhonde, Kirti Sahu, V. V. S. Murty
Summary: Cu-doped TiO2/graphene (CuTGR) composites were prepared for the first time in this study and applied to DSSC anodes. Surface morphological and elemental analysis showed uniform distribution of Cu and graphene in the composite with desired morphology. Addition of graphene improved dye loading ability and charge transport, leading to increased power conversion efficiency in DSSC.
Article
Chemistry, Physical
Li Zhang, Junjie Zhang, Xu Tang, Yong Chen, Xinting Wang, Zijian Deng, Changchun Wang, Xichuan Yang, Bin Sun
Summary: In this study, the design of coplanar organic dyes ZL002, ZL004, and ZL006 with rigid structures led to densely packed arrangements on the surface of TiO2, resulting in improved photoelectric properties, electron injection efficiency, and longer charge-recombination lifetime.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Dapeng Cao, Anchen Wang, Xiaohui Yu, Huiming Yin, Jingbo Zhang, Baoxiu Mi, Zhiqiang Gao
Summary: The study demonstrated that the use of compression and graphene incorporation in TiO2/graphene photoanodes for DSSCs significantly improves power conversion efficiency, transmittance, and resistance to cracking, making it suitable for use as the front unit in tandem solar cells.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Chao-Nan Chen, Yu-Wu Wang, Ying-Rong Ho, Chia-Ming Chang, Wei-Chieh Huang, Jung-Jie Huang
Summary: This study utilized liquid-phase deposition to fabricate a TiO2 film on anodizing TNT, increasing the length and dye adsorption capacity of the nanotubes, ultimately enhancing the photoelectric conversion efficiency of the DSSC device.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Review
Optics
Jing Chen, Chao Zhang, Xiaolin Liu, Lin Peng, Jia Lin, Xianfeng Chen
Summary: This review introduces and summarizes the photoluminescence technique used to explore the carrier dynamic process in all-inorganic halide perovskites. Physical models were proposed to investigate dynamic parameters, and the distinction of photoluminescence spectral behavior between different samples was discussed. Other optical techniques for studying the physical properties of all-inorganic halide perovskites were also briefly described.
PHOTONICS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Tianju Zhang, Chaocheng Zhou, Xuezhen Feng, Ningning Dong, Hong Chen, Xianfeng Chen, Long Zhang, Jia Lin, Jun Wang
Summary: This study investigates the luminescence mechanism of Sn-based perovskites and reveals that deformation potential scattering caused by charged defects dominates the interband relaxation of excitons.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yu Shao, Chao Zhang, Chaocheng Zhou, Tao Wang, Jing Chen, Xiaolin Liu, Jia Lin, Xianfeng Chen
Summary: In this study, all-inorganic CsPbI3 perovskite quantum dots were successfully composited into PVDF nanofibers, resulting in high red emission with excellent water, thermal, and UV light resistance.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Chaocheng Zhou, Tianju Zhang, Chao Zhang, Xiaolin Liu, Jun Wang, Jia Lin, Xianfeng Chen
Summary: This study demonstrates that a small amount of indium ions can effectively repair defects, improve energy-level alignment, and reduce hot-carrier losses in perovskite solar cells, leading to higher efficiency and stability.
Article
Nanoscience & Nanotechnology
Tianju Zhang, Chaocheng Zhou, Jia Lin, Jun Wang
Summary: This study investigates the influence of defects and phonon scattering on the Auger recombination process of two-dimensional tin iodide perovskite LEDs. It reveals that defect scattering dominantly regulates the Auger recombination rate in these perovskites.
Article
Materials Science, Multidisciplinary
Shunwei Yao, Qilin Song, Wenjing Hu, Dan Wang, Lin Peng, Tingting Shi, Jing Chen, Xiaolin Liu, Jia Lin, Xianfeng Chen
Summary: The recent theoretical discovery of high-temperature superconductivity in Li2MgH16 is an important step towards room-temperature superconductors. The study identifies a new ternary hydride of Fd (3) over barm-Rb2MgH16, which is predicted to have a superconducting transition temperature of 130 K to 352 K at 300 GPa.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xiao Liu, Jing Lv, Shunwei Yao, Yanan Wang, Lin Peng, Jing Chen, Xiaolin Liu, Jia Lin, Xianfeng Chen
Summary: This article reports on stable CsPbI3 nanocrystals that are protected by a new organic ligand, HO-PS-N-3 (HOPS), to improve their stability. The optimized CsPbI3 nanocrystals have significantly improved resistance to moisture or light, and maintain 70% of their original luminous intensity after immersion in water for two months. Therefore, surface-stabilized CsPbI3 nanocrystals are beneficial for a wide range of optoelectronic applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
X. Liu, C. Zhang, Y. Cao, Y. Wang, L. Peng, J. Chen, J. Lin
Summary: Recent research investigates the use of zero-dimensional (0D) metal halides as new luminous materials, but the wide-range tunability of luminescence properties by structural engineering needs further exploration. In this study, a series of indium-based A3InX6 (A=K, Rb, or Cs; X=Cl, Br, or their mixture) 0D metal halide single crystals (SCs) were synthesized via vacuum solid-state reaction. Substituting alkali metals at the A site results in similar luminescence properties but very different stability, with Rb3InCl6 being the most air stable. Alloying halogens at the X site of Rb3InX6 can modulate the luminescence wavelength from 436 to 505 nm, and doping Sb3 extends the luminescence wavelength to the 509-622 nm region. Finally, pure white light-emitting diodes were achieved by combining Rb3InBr2Cl4 and Rb3InBr2Cl4:Sb3 doped SCs, benefiting from the highly tunable luminescence properties covering the full visible wavelength range. This work provides a strategy to modulate the luminescence properties of 0D lead-free metal halides through simultaneous substitution, alloying, and doping, enabling various applications.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Zhengxin Chen, Tianhang Tang, Bu Ni, Mengjie Bai, Yongfeng Qi, Xin Yang, Tao Jia, Daolei Wang, Jiang Wu, Jia Lin
Summary: In this study, a novel sol-gel method was used to fabricate carbon-doped amorphous TiO2. The samples showed good mercury removal efficiency, with the best performance achieved when the volume ratio of precursor to ethanol reached 1:13. The incorporation of carbon and the microspherical structure improved light absorption and enhanced photocatalytic activity.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Hongtao Shen, Jiang Wu, Zhengxin Chen, Xu Fang, Jiawei Li, Wenhao Li, Jia Lin, Fei Zhu, Xudong Wang, Yihang Chen
Summary: Ultrawide bandgap materials have important applications in various fields, but they are rarely found in the area of double perovskites. In this study, we designed a hierarchical material screening framework that combines first-principles calculations and interpretable machine-learning models to rapidly discover novel ultrawide bandgap double perovskite materials. Using this framework, we successfully screened four undiscovered ultrawide bandgap materials with suitable properties from a large pool of candidates.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Chemistry, Physical
Jing Chen, Jing Lv, Xiaolin Liu, Jia Lin, Xianfeng Chen
Summary: Time-resolved photoluminescence (TRPL) has been widely used to study charge carrier dynamic processes in halide perovskites. This review focuses on the various exponential models used to fit TRPL curves, the interpretation of carrier lifetimes, and the debates on average lifetime definition. The importance of the diffusion process in carrier dynamics, particularly in halide perovskite thin films with transport layers, is emphasized. The review also introduces the use of analytical and numerical methods to solve the diffusion equation and fit TRPL curves, and discusses newly proposed techniques such as global fit and direct measurement of radiative decay rates.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Fanghe Zhou, Yonglin Zhang, Jiang Wu, Wu Yang, Xu Fang, Tao Jia, Yang Ling, Ping He, Qizhen Liu, Jia Lin
Summary: In this study, erbium-doped ZnIn2S4 photocatalyst was synthesized and found to greatly enhance the photocatalytic performance for CO2 reduction. The efficiency of CO2 reduction to methane was improved by over 256 times, with a selectivity exceeding 90%. DFT analysis revealed that erbium doping introduced new energy levels, narrowing the band gap and enhancing light absorption efficiency. Furthermore, the erbium-doped ZnIn2S4 exhibited a distinct reaction pathway, reducing the reaction barrier and promoting the adsorption of key intermediates for the production of CH4.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Dan Wang, Shunwei Yao, Yening Zhong, Lin Peng, Tingting Shi, Jin Chen, Xiaolin Liu, Jia Lin
Summary: This study presents a four-terminal tandem solar cell by mechanically stacking wide-bandgap CsPbI3 and low-bandgap CZTSSe, with optimized layer thickness to improve absorption. The impact of doping concentration, energy band-bending, and built-in electrical field on solar cell performance is also discussed.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Chao Zhang, Xuezhen Feng, Qilin Song, Chaocheng Zhou, Lin Peng, Xiaolin Liu, Hong Chen, Jia Lin
Summary: This study reports the rational design of lead-free metal halide materials, composed of copper and bimetallic halide clusters. The luminescence properties of the materials can be modulated by different bimetallic cations, offering new possibilities for exploring novel luminescent materials.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Chuyun Ding, Xi Chen, Tianju Zhang, Chaocheng Zhou, Xiaolin Liu, Jun Wang, Jia Lin, Xianfeng Chen
Summary: The study presents a new strategy for the low-temperature preparation of highly stable black-phase CsPbI3 using electrochemical methods, which exhibits red luminescence and long-term stability in high humidity environments for up to 11 days.
CHEMICAL COMMUNICATIONS
(2021)
