Article
Chemistry, Physical
Hao Xiu, Tianshu Gao, Na An, Ying Wang, Yang Zhou, Xiaopeng Qi, Deyu Liu, Yongbo Kuang
Summary: A general solution method using citrate to prepare nanoporous oxide thin films with controllable porosity was reported. The impacts of morphology on photoelectrochemical performance were studied using CuBi2O4 as a model material. The synthesis technique can be applied to prepare crystallized nanoporous oxide thin films with tunable morphologies for photovoltaic and other catalytic applications.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jaroslaw Sar, Katarzyna Kolodziejak, Krzysztof Orlinski, Michal Gajewski, Marian Teodorczyk, Dorota Anna Pawlak
Summary: In this study, photoelectrochemical electrodes based on SrTiO3-TiO2 were fabricated and their photoactivity was investigated. The results showed that a 50 nm thick layer prepared on titanium had the highest photocurrent density.
Article
Materials Science, Ceramics
Carvyn Tutong Blaise, Ming-Wei Chu, Pin-Yi Chen, Jhih-Wei Chen, Chi-Shun Tu, Wei Sea Chang
Summary: The spontaneous polarization in ferroelectrics can effectively engineer the charge distribution at ferroelectric heterojunctions, thereby influencing the depletion width and energy band structures. In this study, p-type multiferroic Nd-doped bismuth ferrite (BFO7Nd) was integrated with n-type transparent conductive indium tin oxide (ITO) to investigate the impact of ferroelectric polarization on surface potential and photoelectrochemical (PEC) water reduction. The results showed that the polarization bound charges at the ITO-BFO7Nd interface could modulate the interface barrier, leading to enhanced electron lifetime and photocurrent density for P-up ITO-BFO7Nd compared to unpoled and P-down states. This work demonstrates that combining ferroelectric polarization with photogenerated carriers is an effective approach for improving charge transfer in multiferroic ceramics for PEC solar water splitting.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
S. R. Sitaaraman, Andrews Nirmala Grace, Raja Sellappan
Summary: In this study, a tandem cell consisting of a Mo-BiVO4/TiO2/FeOOH photoanode-Cu2O/TiO2/MoS2 photocathode was prepared for unassisted solar water splitting. The spin coated TiO2 protective layer demonstrated better stability and enhanced photoelectrochemical performance.
Article
Chemistry, Multidisciplinary
Florin Andrei, Valentin Ion, Ruxandra Birjega, Maria Dinescu, Nicoleta Enea, Dan Pantelica, Maria Diana Mihai, Valentin-Adrian Maraloiu, Valentin Serban Teodorescu, Ioan-Cezar Marcu, Nicu Doinel Scarisoreanu
Summary: The study investigates the formation of self-assembled nanodomains in LaFeO3 epitaxial thin films and their effects on the photoelectrochemical properties, revealing detrimental effects on PEC functional properties when nanopyramids-like domains appear after a thickness threshold. The research provides insights into the structural and stoichiometric features that influence the photocurrent density and onset potential exhibited by LFO photoelectrodes. Moreover, the highest photocurrent density values were observed for the thinnest LFO/Nb:SrTiO3 sample, showing excellent stability over time and unbiased hydrogen evolution from water.
Article
Chemistry, Multidisciplinary
E. Mustafa, E. A. Dawi, Z. H. Ibupoto, A. M. M. Ibrahim, A. Elsukova, X. Liu, A. Tahira, R. E. Adam, M. Willander, O. Nur
Summary: Water splitting energy production relies on high-performance PECs, and CuO is considered an excellent photocathode material. By incorporating Ag2WO4 nanoparticles onto CuO nanoleaves using SILAR, a CuO/Ag2WO4 composite with outstanding performance in the PEC water splitting process is developed. Factors such as surface active sites, charge separation rate, surface defects, and CuO and Ag2WO4 interaction contribute to the performance of the composite.
Article
Chemistry, Physical
Dibyendu Ghosh, Krishnendu Roy, Soumyajit Maitra, Praveen Kumar
Summary: Among 2D materials, asymmetric Janus structures (MoSSe, WSSe) have exciting properties, and using a magnetic field to control spin manipulation can enhance the efficiency of photo-electrochemical water splitting, while delaminated 2D-MXene (Ti3C2Tx/MoSSe/GaN) can further enhance photocurrent and product formation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Robabeh Bashiri, Muhammad Syahmi Irfan, Norani Muti Mohamed, Suriati Sufian, Liew Yi Ling, Nur Amirah Suhaimi, Mohamad Fakhrul Ridhwan Samsudin
Summary: The fabrication of SrTiO3@TiO2@Fe2O3 nanorod heterostructure for photocatalytic solar hydrogen production was demonstrated, optimizing the composition of Sr and Fe on the surface. The optimized heterostructure showed improved photoconversion efficiency and high hydrogen production. Manipulation of morphology and energy band alignment greatly influenced the physicochemical and photoelectrochemical properties of the materials.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Chemistry, Multidisciplinary
Limin Yu, Lijing Wang, Yanmeng Dou, Yongya Zhang, Pan Li, Jieqiong Li, Wei Wei
Summary: This review covers the recent advances of inorganic perovskite ferroelectric-based nanomaterials in the field of photoelectrochemistry, discussing the impact of ferroelectric polarization on photo-induced carrier separation and transportation in the interface of compounded semiconductors, and also explores the future prospects of ferroelectric-based nanomaterials.
Article
Chemistry, Multidisciplinary
Chanon Pornrungroj, Virgil Andrei, Erwin Reisner
Summary: Photoelectrochemical reactors can utilize waste heat by integrating thermoelectric modules, achieving unassisted water splitting and enhanced photocurrent. This thermal management approach provides a universal strategy for widespread solar fuel production.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Energy & Fuels
Jun Liu, Huaping Zhao, Zhijie Wang, Thomas Hannappel, Ulrike I. Kramm, Bastian J. M. Etzold, Yong Lei
Summary: This review summarizes the current advances in tandem nanostructures for photoelectrochemical (PEC) water splitting. Firstly, the state of the art for tandem nanostructures applied in PEC water splitting is summarized. Secondly, the advances in this field and advantages arising from employing tandem nanostructures for PEC water splitting are outlined. Subsequently, different types of tandem nanostructures are reviewed.
Article
Chemistry, Multidisciplinary
Guohua Dong, Yue Hu, Changqing Guo, Haijun Wu, Haixia Liu, Ruobo Peng, Dan Xian, Qi Mao, Yongqi Dong, Yanan Zhao, Bin Peng, Zhiguang Wang, Zhongqiang Hu, Junwei Zhang, Xueyun Wang, Jiawang Hong, Zhenlin Luo, Wei Ren, Zuo-Guang Ye, Zhuangde Jiang, Ziyao Zhou, Houbing Huang, Yong Peng, Ming Liu
Summary: This study presents a method for preparing self-assembled, epitaxial, ferroelectric nanosprings and demonstrates their super-scalability and full recovery capability.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Ceramics
Cheng Li, Tianci Fang, Hong Hu, Yifan Wang, Xuyi Liu, Sibo Zhou, Junli Fu, Wenzhong Wang
Summary: By depositing Cu2O nanoparticles onto the surface of BaTiO3 using an electrochemical method, BTO/Cu2O heterostructure photoanodes were prepared. These photoanodes exhibited significantly improved photocurrent density compared to pure BTO photoanodes.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Weiguang Hu, Nguyen Duc Quang, Sutripto Majumder, Min Ji Jeong, Ji Hye Park, Young Joon Cho, Seung Bo Kim, Kyubock Lee, Dojin Kim, Hyo Sik Chang
Summary: The study focused on improving the photoelectrochemical (PEC) performance by preparing a porous carbon black (CB) film as a template to grow 3D nanoporous SnO2 through ALD method, followed by CdS thin film coating. The 3D nanoporous SnO2/CdS heterojunction showed significantly higher photocurrent density, IPCE, and ABPE values compared to planar SnO2/CdS film, demonstrating its efficiency in PEC water splitting.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Simone Casadio, Angela Gondolini, Nicola Sangiorgi, Andrea Candini, Alessandra Sanson
Summary: This study fabricates highly transparent BiTO thin film photo-cathodes for CO2 photoelectrochemical reduction, utilizing the ferroelectric potential to enhance the performance.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Xinwei Guan, Tao Wan, Long Hu, Chun-Ho Lin, Jialin Yang, Jing-Kai Huang, Chien-Yu Huang, Shamim Shahrokhi, Adnan Younis, Kavitha Ramadass, Kewei Liu, Ajayan Vinu, Jiabao Yi, Dewei Chu, Tom Wu
Summary: Integrating multiple semiconductors with distinct physical properties is a practical design strategy for realizing novel optoelectronic devices with unprecedented functionalities. In this work, a photonic resistive switching memory is demonstrated based on a bilayer architecture of strontium titanate quantum dots and all-inorganic halide perovskite. The device shows improved resistive switching performance, UV-visible dual-band response, and tri-mode operation.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Chun-Ho Lin, Long Hu, Xinwei Guan, Jiyun Kim, Chien-Yu Huang, Jing-Kai Huang, Simrjit Singh, Tom Wu
Summary: This article provides a critical review on the elusive nature of perovskite/electrode interfaces, focusing on the interfacial electrochemistry effects. It discusses the basic guidelines for electrode selection to establish non-polarized interfaces and optimize energy level alignment for perovskite materials. Furthermore, state-of-the-art strategies on interface-related electrode engineering are reviewed and discussed, aiming to achieve ohmic transport and eliminate hysteresis in perovskite devices. The role and multiple functionalities of self-assembled monolayers in improving perovskite/electrode contacts are also discussed.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Xingyu Qu, He Huang, Tao Wan, Long Hu, Zhenlu Yu, Yunjian Liu, Aichun Dou, Yu Zhou, Mingru Su, Xiaoqi Peng, Hong-Hui Wu, Tom Wu, Dewei Chu
Summary: An integrated surface coating/doping strategy has been developed to improve the structural stability and electrochemical performance of high-nickel layered oxides, leading to enhanced cycling stability and capacity retention of batteries. The strategy involves diffusion of titanium ions from a thin coating layer, formation of a protective layer on the material surface, and Ti4+ doping to enhance lithium ion diffusion and reduce side reactions, ultimately benefiting the cycling stability of the cathode.
Article
Nanoscience & Nanotechnology
Biaohong Huang, Zhongshuai Xie, Dingshuai Feng, Lingli Li, Xiaoqi Li, Tula R. Paudel, Zheng Han, Weijin Hu, Guoliang Yuan, Tom Wu, Zhidong Zhang
Summary: By judiciously controlling the defect states of oxygen vacancy through Sm-doping, multiple current jumps and discrete resistance states can be obtained in ferroelectric resistive switching memories. Oxygen vacancies play a critical role in electron trapping and as pinning centers for ferroelectric domains, leading to domain wall creep behavior.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Long Hu, Leiping Duan, Yuchen Yao, Weijian Chen, Zizhen Zhou, Claudio Cazorla, Chun-Ho Lin, Xinwei Guan, Xun Geng, Fei Wang, Tao Wan, Shuying Wu, Soshan Cheong, Richard D. Tilley, Shanqin Liu, Jianyu Yuan, Dewei Chu, Tom Wu, Shujuan Huang
Summary: A universal method using halide perovskite quantum dots to improve the performance and stability of polycrystalline perovskite films is proposed in this work. The treated films show suppressed light-induced phase segregation and degradation, with significantly improved efficiency.
Article
Energy & Fuels
Hongling Guo, Rutao Meng, Long Hu, Chun-Ho Lin, Yali Sun, Yue Liu, Jianyu Wu, Zhan Shen, Dewei Chu, Gang Wang, Li Wu, Guangxing Liang, Shifu Xiong, Fangfang Liu, Yi Zhang, Tom Wu
Summary: The study demonstrates an effective strategy of accurately adjusting the Sn content in CZTSSe films by optimizing the selenization pressure, with negative pressure of 0.7 atm showing the best results. The research paves the way towards highly efficient kesterite solar cells by tailoring composition-dependent defects.
Article
Chemistry, Physical
Aditya Singh, Jason Lynch, Surendra B. Anantharaman, Jin Hou, Simrjit Singh, Gwangwoo Kim, Aditya D. Mohite, Rajendra Singh, Deep Jariwala
Summary: This study reports a novel approach to enhance the weak Raman scattering signals in 2D hybrid organic-inorganic perovskites (HOIPs) by introducing an open-cavity. The Raman signals were observed to be enhanced 15 times due to the Purcell effect inside the high-index HOIP crystals. This simple approach can be extended to enhance the study of phonon scattering in other HOIPs and van der Waals layered crystals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Jianguo Sun, Bin Li, Long Hu, Junjun Guo, Xufeng Ling, Xuliang Zhang, Chi Zhang, Xianxin Wu, Hehe Huang, Chenxu Han, Xinfeng Liu, Youyong Li, Shujuan Huang, Tom Wu, Jianyu Yuan, Wanli Ma
Summary: Solution processable semiconductors like organics and emerging lead halide perovskites (LHPs) are ideal candidates for photovoltaics. This study investigates a novel device architecture involving block copolymer/perovskite hybrid bulk heterointerfaces, which enhances light absorption, energy level cascade, and provides a thin hydrophobic layer to improve carrier generation and prevent moisture invasion. The resulting hybrid solar cell exhibits high efficiency and stability, and the approach can be extended to other LHPs.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Yecheng Ding, Xuefeng Zhao, Zeen Zhao, Yaojin Wang, Tom Wu, Guoliang Yuan, Jun-Ming Liu
Summary: Lead halide perovskite materials, such as MAPbBr3 and MAPbI3, have excellent semiconductor properties and are highly promising for applications in solar cells and photodetectors. This study demonstrates that periodic strain can manipulate the built-in electric field, leading to increased short-circuit current and open-circuit voltage. Additionally, the study suggests the potential of using piezoelectric effects for multifunctional sensing, enabling measurements of light intensity, dynamic pressure, and acceleration simultaneously.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Uma V. Ghorpade, Mahesh P. Suryawanshi, Martin A. Green, Tom Wu, Xiaojing Hao, Kevin M. Ryan
Summary: This review provides an overview of the development of versatile chalcohalide materials, focusing on their design, synthesis, optoelectronic properties, and applications in energy conversion and storage devices. Computational techniques, theoretical and experimental approaches are employed to understand the band structures, stability, and structural chemistry of these materials. The review also discusses the challenges and future research directions in this field.
Article
Nanoscience & Nanotechnology
Xingjie Lv, Guoliang Yuan, Tom Wu, Zhibo Yan, Ben Xu, Guanghua Liu, Jun-Ming Liu
Summary: This study investigates the four different lifetimes of photocarriers in MAPbI(3) single crystal, shedding light on the physical mechanisms and facilitating the design of novel electronics with halide perovskite semiconductors.
ADVANCED ELECTRONIC MATERIALS
(2023)
Review
Multidisciplinary Sciences
Weili Yu, Feng Li, Tao Huang, Wei Li, Tom Wu
Summary: Halide perovskite heterojunctions combine the properties of multi-dimensional perovskites and selected semiconductors, surpassing the limitations of a single component. This platform allows for material property tuning, discovery of interesting phenomena, and enables novel applications.
Article
Chemistry, Multidisciplinary
Simrjit Singh, Weiyi Gong, Christopher E. Stevens, Jin Hou, Aditya Singh, Huiqin Zhang, Surendra B. Anantharaman, Aditya D. Mohite, Joshua R. Hendrickson, Qimin Yan, Deep Jariwala
Summary: This article investigates the interlayer exciton phenomenon in two-dimensional heterostructures, and demonstrates the observation of helicity-resolved interlayer excitons through spin-valley layer coupling. This method does not require a specific geometric arrangement, such as twist angle or thermal annealing. The research shows that there are spin-valley-dependent optical selection rules in two-dimensional perovskites and monolayer transition metal dichalcogenides.
Review
Materials Science, Multidisciplinary
Dawei Duan, Chuangye Ge, Md Zahidur Rahaman, Chun-Ho Lin, Yumeng Shi, Haoran Lin, Hanlin Hu, Tom Wu
Summary: Metal halide perovskites are easy to synthesize and have tunable physical properties and excellent performance, making them important optoelectronic materials. One-dimensional (1D) nanostructures at both the morphological and molecular levels enhance the performance of optoelectronic devices. Recent progress in the synthesis and characterization of 1D halide perovskites with tunable structures, compositions, and properties, as well as their applications in photovoltaics, light emission, and photodetection, is highlighted. Current challenges, future prospects, and promising research directions are discussed to advance the field of 1D perovskites.
NPG ASIA MATERIALS
(2023)
