Article
Chemistry, Multidisciplinary
Tianying Liu, Wei Li, David Z. Wang, Tongtong Luo, Muchun Fei, Dongyoon Shin, Matthias M. Waegele, Dunwei Wang
Summary: Solar water oxidation is a crucial step in artificial photosynthesis, and its success relies on the accumulation of charges at the active site. Little is known about the impact of catalyst density on the reaction rate. This study investigates the interplay between catalyst density and surface hole concentration and reveals the unexpected benefits of low-density catalyst loading in facilitating forward charge transfer.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Energy & Fuels
Maoqi Cao, Hongmei Li, Kang Liu, Junhua Hu, Hao Pan, Junwei Fu, Min Liu
Summary: Vertical SrNbO2N nanorod arrays were successfully synthesized by a facile hydrothermal method with nitridation process, and exhibited enhanced photocatalytic activity for solar-driven photoelectrochemical water splitting after decoration with CoOx nanoparticles.
Article
Electrochemistry
Weixin Qiu, Yanfang Zhang, Yang Liu, Xiang Yin, Xuetao Yang, Keke Wang, Long Chen, Qingmei Wang, Wenzhang Li, Jie Li
Summary: By synthesizing a two-dimensional morphology and introducing oxygen vacancies, the carrier transport capacity of BiVO4 has been improved, enhancing its performance in PEC water splitting.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Chanon Pornrungroj, Virgil Andrei, Motiar Rahaman, Chawit Uswachoke, Hannah J. Joyce, Dominic S. Wright, Erwin Reisner
Summary: The integrated device combines PEC water splitting and electrolyzer functions, operating during the day with solar energy and at night with electricity to increase energy efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Hwapyong Kim, Joo Won Seo, Wookjin Chung, Ghulam Mustafa Narejo, Sung Wook Koo, Ji Su Han, Jiwoong Yang, Jae-Yup Kim, Su-Il In
Summary: Photoelectrochemical (PEC) hydrogen production is an emerging technology that utilizes renewable solar light to establish a sustainable carbon-neutral society. Researchers have focused on materials and systems, but recent studies have explored the use of thermal effects in PEC hydrogen production. This Review provides a fresh perspective on utilizing thermal effects for enhancing PEC performance and summarizes the underlying principles and equations associated with efficiency.
Review
Chemistry, Multidisciplinary
Hwapyong Kim, Joo Won Seo, Wookjin Chung, Ghulam Mustafa Narejo, Sung Wook Koo, Ji Su Han, Jiwoong Yang, Jae-Yup Kim, Su-Il In
Summary: Photoelectrochemical (PEC) hydrogen production is a promising technology for establishing a sustainable carbon-neutral society. However, its commercialization is hindered by low efficiency and high cost. Recent studies on utilizing thermal effects in PEC have opened up new possibilities for enhancing its performance. This review provides an overview of the principles and equations related to the thermal effect on PEC, and categorizes materials into plasmonic metals, quantum dot-based semiconductors, and photothermal organic materials. The economic viability and challenges of these strategies are also discussed.
Article
Chemistry, Multidisciplinary
Songtao Tang, Weitao Qiu, Xiuwen Xu, Shuang Xiao, Yexiang Tong, Xinwei Wang, Shihe Yang
Summary: There is evidence that defects can improve the catalytic activity of photoelectrochemical (PEC) water splitting, but they can also degrade the PEC performance. This study demonstrates the use of the infrared part of sunlight to activate polarons and improve the overall PEC performance, achieving a high solar-to-hydrogen efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
John R. Hemmerling, Aarti Mathur, Suljo Linic
Summary: This study investigates the evolution of the interface between photoelectrocatalysts and semiconductors under reaction conditions and reveals the impact of interface atomic changes on performance. It demonstrates the critical links between the atomic features of the interface, electron/hole recombination rates, and barrier height of the interface.
ADVANCED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Jifang Zhang, Junyi Cui, Salvador Eslava
Summary: This review discusses efforts to improve water oxidation at photoanodes in the field of photoelectrochemical water splitting, focusing on the use of oxygen evolution catalysts (OECs). The roles of OECs are found to be multifaceted, beyond just catalytic. The review also highlights useful characterization techniques for probing the dynamics of photogenerated holes and proposes design principles for OECs.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Jinxing Yu, Shufang Chang, Li Shi, Xiaoxiang Xu
Summary: By modifying the surface morphology of Bi2YO4Cl through facet-engineering techniques, the material exhibits improved separation and guidance of photocarriers, leading to higher activity and stability in solar water splitting reactions.
Article
Chemistry, Physical
Jifang Zhang, Qiyuan Lin, Zhenlei Wang, Haowen Liu, Xuanzhang Li, Yuegang Zhang
Summary: The study proposes that water oxidation on hematite can proceed via mixed reaction paths, contrary to the traditional assumption of a single reaction path. By isolating absorption signals of surface states responsible for water oxidation, the research highlights the significant contribution of direct hole transfer, especially for highly doped hematite. This finding challenges existing experimental techniques that rely on oversimplified models and theories.
Article
Materials Science, Multidisciplinary
Ahmed Chnani, Andrea Knauer, Steffen Strehle
Summary: This study presents excellent ultrathin hematite-hercynite photoanodes that are stable, efficient, and cost-effective for photoelectrochemical water splitting. By adjusting the aluminum concentration and optimizing the annealing conditions, the photocurrent density and light absorption of the photoanodes are significantly improved. Furthermore, the ultrathin hematite-hercynite photoanodes enable unbiased solar water splitting.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Ch. Venkata Reddy, I. Neelakanta Reddy, K. Ravindranadh, K. Raghava Reddy, Jaesool Shim, Bai Cheolho
Summary: The Au-doped BiVO4 nanostructures prepared by ultrasonication technique showed significantly improved performance as a photoanode for energy harvesting in terms of PEC photocurrent density and supercapacitor properties. The dopant enhanced charge carrier density and acted as an electron donor, contributing to the improved performance of the photoanode.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Cheng Lu, Duo Zhang, Zhenyu Wu, Xiaoquan Zhao, Kun Feng, Gaoteng Zhang, Shuao Wang, Zhenhui Kang, Jun Zhong
Summary: In this study, a hetero phase of & beta;-Fe2O3 was introduced in & alpha;-Fe2O3 to optimize the internal structure, which significantly enhanced the charge extraction and transport, and suppressed the electron-hole recombination. The resulting hematite-based photoanodes exhibited high initial photocurrent and excellent stability, making them a promising candidate for practical solar water splitting.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Xiaoquan Zhao, Cheng Lu, Shuo Li, Yufeng Chen, Gaoteng Zhang, Duo Zhang, Kun Feng, Jun Zhong
Summary: By treating hematite with Zr and F, the charge transfer and recombination can be improved, leading to an enhanced photoelectrochemical performance for water splitting. The modified hematite shows a significantly higher photocurrent density and a lower onset potential compared to pristine hematite. This design can be a promising approach for efficient catalysts in solar water splitting.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jian Wang, Shuang Xiao, Wei Qian, Kai Zhang, Jun Yu, Xiuwen Xu, Gaopeng Wang, Shizhao Zheng, Shihe Yang
Summary: A filterless and self-driven perovskite narrowband photodetector with tunable bandgap based on defect-assisted charge collection narrowing mechanism is reported in this study, showing wide spectral response range and excellent detection performance. It has the potential for high-efficiency optoelectronic devices without external power sources.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jian Wang, Xiuwen Xu, Shuang Xiao, Yu Li, Wei Qian, Jun Yu, Kai Zhang, Shihe Yang
Summary: This study demonstrates a unique capability of halide perovskites in making self-driven dual-band photodetectors with negative broadband and positive narrowband responses. The device operates through a charge separation reversion mechanism and exhibits extremely low noise and high specific detectivity, opening up application opportunities in intelligent recognition and biomedical diagnosis.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiuwen Xu, Wei Qian, Jian Wang, Jiecheng Yang, Jianwei Chen, Shuang Xiao, Yongshuai Ge, Shihe Yang
Summary: By developing a double-layer perovskite film combining the advantages of 2D and 3D perovskites while avoiding their inherent limitations, high sensitivity and stability were achieved. This design increases film resistivity, enlarges the energy barrier, and successfully demonstrates X-ray imaging capability.
Article
Chemistry, Multidisciplinary
Songtao Tang, Weitao Qiu, Xiuwen Xu, Shuang Xiao, Yexiang Tong, Xinwei Wang, Shihe Yang
Summary: There is evidence that defects can improve the catalytic activity of photoelectrochemical (PEC) water splitting, but they can also degrade the PEC performance. This study demonstrates the use of the infrared part of sunlight to activate polarons and improve the overall PEC performance, achieving a high solar-to-hydrogen efficiency.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Gaopeng Wang, Kai Zhang, Zheng Wang, Jian Wang, Rongguo Xu, Lin Li, Xiuwen Xu, Yu Li, Shuang Xiao, Shizhao Zheng, Xiong Li, Shihe Yang
Summary: The introduction of a phenyl phosphine-based polymer as a novel cathode interlayer in perovskite solar cells has been shown to significantly improve device efficiency and stability, making it an effective diffusion barrier for Ag and I ions.
Article
Energy & Fuels
Tongfa Liu, Yu Li, Rongguo Xu, Lingyun Lou, Jinqiang Gao, Kai Zhang, Mingzhu Su, Wei Qian, Gaopeng Wang, Shuang Xiao, Shihe Yang
Summary: An innovative perovskite/carbon bulk heterojunction for carbon-based perovskite solar cells is developed and studied, leading to improved efficiency and stability of the cells.
Article
Chemistry, Multidisciplinary
Yu Li, Zedong Lin, Jian Wang, Rongguo Xu, Kai Zhang, Gaopeng Wang, Tongfa Liu, Huanping Zhou, Shuang Xiao, Shihe Yang
Summary: The vapor healing strategy allows for simultaneous filling of vacancies, passivation of defects, and improvement of performance in perovskite films. It reduces trap density and non-radiative recombination, leading to higher conversion efficiency and stability of the devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Bo Li, Xin Wu, He Zhang, Shoufeng Zhang, Zhen Li, Danpeng Gao, Chunlei Zhang, Muqing Chen, Shuang Xiao, Alex K. -Y. Jen, Shangfeng Yang, Zonglong Zhu
Summary: A multifunctional interface manipulation strategy is developed to improve the performance and stability of tin perovskite solar cells (PSCs) by introducing a pyridine-functionalized fullerene derivative. The resulting devices achieve the highest power conversion efficiency (PCE) of 14.14% and maintain over 95% of their initial PCE after continuous one-sun illumination for 1000 hours.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yi He, Zedong Lin, Jian Wang, Kai Zhang, Xiuwen Xu, Yu Li, Xianzhen Huang, Tingli Ma, Shuang Xiao, Shihe Yang
Summary: Halide perovskites are promising materials for optoelectronic devices due to their outstanding properties and relatively low cost. However, the instability of common precursor solutions hampers large-scale low-cost production. In this study, a solid-liquid convertible perovskite precursor was developed using water, which exhibited high damp air stability and processibility for perovskite growth. By guiding the growth direction of perovskite, the film quality was significantly improved. The precursor was successfully used for fabricating self-driven halide perovskite photodetectors with low noise current, high specific detectivity, and high stability.
Article
Engineering, Environmental
Bo Li, Xin Wu, Shoufeng Zhang, Zhen Li, Danpeng Gao, Xiankai Chen, Shuang Xiao, Chu-Chen Chueh, Zonglong Zhu
Summary: This study successfully improved the efficiency and stability of double perovskite solar cells by using fused-ring electron acceptor molecules for passivating defects. The modified devices demonstrated significantly increased open-circuit voltage and the highest efficiency achieved to date, along with superior long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Physical
Shuang Xiao, Wei Qian, Shihe Yang
Summary: Perovskite optoelectronics is a rapidly growing field with great achievements, and the design and properties of perovskite-perovskite interfaced structures play a crucial role in improving device performance.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yue Deng, Huicong Liu, Hailiang Wang, Yongfa Song, Weiping Li, Liqun Zhu, Xiangfan Xie, Shuang Xiao, Haining Chen
Summary: Sb-2(S, Se)(3) solar cells show promise in terms of low cost, non-toxicity, and high stability, but the use of noble metals as the back electrode limits their stability. This study demonstrates the use of carbon materials as replacements for noble metals in Sb-2(S, Se)(3) solar cells. By growing high-quality Sb-2(S, Se)(3) films using a two-step hydrothermal method, the carbon-based solar cells achieved a power conversion efficiency of 2.76%. Inserting a stable P3HT layer at the film/carbon interface further improved hole extraction and increased the efficiency to 4.15%. This work proposes a promising approach to develop cost-effective and stable emerging solar cells.
Review
Chemistry, Multidisciplinary
Xiangfan Xie, Shengqiao Zeng, Cangtao Zhou, Shuang Xiao
Summary: This review discusses the fabrication strategies for high-quality halide perovskite films in perovskite solar cells, including crystallization reaction-controlled growth, the influence of additives on film formation, and mass transfer-controlled growth. The review concludes by summarizing the key points and discussing potential routes for further development of high-quality film fabrication strategies.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Ran Zhao, Kai Zhang, Jiahao Zhu, Shuang Xiao, Wei Xiong, Jian Wang, Tanghao Liu, Guichuan Xing, Kaiyang Wang, Shihe Yang, Xinwei Wang
Summary: Lowering the deposition temperature of ALD was found to reduce the degradation of the MAPbI(3) perovskite surface, with the best temperature identified as 75 degrees C. Solar cells with ALD Al2O3 interlayers deposited at 75 degrees C exhibited significantly enhanced power conversion efficiency, indicating the effectiveness of the ALD layer in passivating defect states at the perovskite surface.
NANOSCALE ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Wei Qian, Xiuwen Xu, Jian Wang, Yangbing Xu, Jianwei Chen, Yongshuai Ge, Jun Chen, Shuang Xiao, Shihe Yang
Summary: This study demonstrates a low-cost method for large-scale fabrication of high-quality halide perovskite films and the construction of X-ray detectors with unprecedented sensitivity and low detection limit based on these films. The results show great potential for high-resolution radiographic imaging.