Article
Physics, Condensed Matter
Yiqi Hu, Amr Abdelsamie, Yuyan Weng, Fengang Zheng, Liang Fang, Lu You
Summary: This study focuses on the effect of polar order on the optical and photovoltaic properties of ferroelectric materials, using BiFeO3 as the model system. By inducing polarization rotation through A-site La substitution, the optical anisotropy of the samples is continuously reduced, leading to a decrease in the angular dependence of the ferroelectric photovoltaic effect on light polarization. This highlights the inner connection between ferroelectric polarization and optical anisotropy through lattice degree of freedom.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Dingshuai Feng, Biaohong Huang, Lingli Li, Xiaoqi Li, Youdi Gu, Weijin Hu, Zhidong Zhang
Summary: In this study, the effects of Eu3+ doping content on the properties of BiFeO3 (BFO) films were investigated. It was found that moderate Eu3+ doping can enhance the photovoltaic effect of BFO thin film devices.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Guoqiang Xi, Jiaqi Ding, Ruiqi Guo, Jianjun Tian, Linxing Zhang
Summary: By optimizing the Bi content, researchers have successfully achieved enhanced ferroelectric polarization and photovoltaic effect in BiFeO3 thin films. Compact and uniform films with improved remanent polarization and increased photovoltaic signal control range were obtained through the control of chemical composition. The study suggests that ferroelectric polarization is the main driving force for enhancing switchable ferroelectric photovoltaic.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Mengru Li, Haoran Sun, Yongqi Ruan, Chuan Cao, Peng Zhou, Yajun Qi, Tianjin Zhang
Summary: The photovoltaic effect and self-powered ultraviolet photodetection properties were studied in the Pt/Bi3.15Nd0.85Ti3O12 (BNT)/Pt heterostructure. The BNT films exhibited obvious photovoltaic characteristics with an open-circuit voltage of 0.67 +/- 0.04 V and a short-circuit current density of 2.27 +/- 0.08 mu A/ cm2 at a wavelength of 365 nm and a power of 77.50 mW/cm2. The self-powered ultraviolet photodetector showed a responsivity of 0.047 +/- 0.003 mA/W and a detection rate of (1.47 +/- 0.04) x 109 Jones. The reversed photocurrent response mechanism was explained based on the internal electric field for the separation and transport of photo-excited electron-hole pairs in the Pt/BNT/Pt heterostructure. The dependence of JSC on the polarization direction demonstrated the electrical manipulation nature of BNT-based self-powered photodetectors, offering a new approach for the design of photodetectors using ferroelectric oxides.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xianlong Li, Zhiliang Wang, Wenzhong Ji, Teng Lu, Jiakang You, Kai Wang, Gang Liu, Yun Liu, Lianzhou Wang
Summary: This study demonstrates the controllable dipole moments in a ferroelectric BiFeO3 photoelectrode under external poling, leading to a tunable band bending and charge transfer efficiency. Negative bias increases the CST efficiency, while positive bias reduces it significantly.
Article
Chemistry, Physical
Tiantian Yang, Jie Wei, Zehao Sun, Yunpeng Li, Zhiting Liu, Youlong Xu, Guogang Chen, Tiangang Wang, Hai Sun, Zhenxiang Cheng
Summary: Photovoltaic technology has been a research hotspot in the field of renewable energy, and the fermelectric photovoltaic effect in BiFeO3 has attracted attention for its potential to break through energy conversion limits. Oxygen vacancies play a significant role in enhancing the photovoltaic effect by introducing impurity bands and restructuring energy band structures.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Yang Chen, Haoming Wei, Mingxu Wang, Bingqiang Cao
Summary: The study investigated the role of domain walls (DW) on the bulk photovoltaic effect (BPV) in BiFeO3 (BFO) films by controlling the epitaxial orientation of the film. It was found that the DW enhanced the transport of photogenerated carriers, improving conductivity and power conversion efficiency (PCE). This correlation between DW and BPV effect in BFO film provides a new pathway to enhance the performance of BFO-based photovoltaic devices.
Article
Nanoscience & Nanotechnology
A. Berenov, P. Petrov, B. Moffat, J. Phair, L. Allers, R. W. Whatmore
Summary: This study investigated the properties of Nb-doped lead zirconate titanate films and found that Nb doping affects the orientation and ferroelectric response of the films, while also increasing the internal field and pyroelectric coefficient. Nb-doped films showed an increase in photocurrent, exhibiting a complex relationship between photovoltaic and pyroelectric effects.
Article
Nanoscience & Nanotechnology
Gabriel Velarde, Shishir Pandya, J. Karthik, David Pesquera, Lane W. Martin
Summary: This review discusses recent advances in thin-film pyroelectrics, highlighting the complex physical phenomena and history in this field, and emphasizing the importance of controlling thin-film materials. The review also explores recent advancements in thin-film pyroelectric devices and potential future research directions.
Article
Engineering, Electrical & Electronic
Guiyun Sun, Huan Li, Siqi Zhong, Chen Chen, Keju Ren, Zhixin Zeng, Xiaoling Deng, Rongli Gao, Wei Cai, Chunlin Fu, Gang Chen, Zhenhua Wang, Xiang Lei
Summary: This paper investigated the crystal structure, surface morphology, electrical properties, magnetic properties, photovoltaic properties, as well as magnetic and photoelectric coupling properties of the BFO/CFO composite films. The results showed the influence of composition on these properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Yue Wang, Changqing Guo, Mingfeng Chen, Yuhan Liang, Haojie Han, Hetian Chen, Yuanhua Lin, Di Yi, Houbing Huang, Ce-Wen Nan, Jing Ma
Summary: Mechanically driven reversible polarization switching has been achieved in imprinted ferroelectric BiFeO3 thin films, allowing for the design of ferroelectric nanodomain structures without the need for voltage application. This reversible switching is enabled by the flexoelectric effect, piezoelectric effect, and internal upward built-in field in the BiFeO3 films. The study provides valuable insights into the mechanism and control of mechanically driven polarization switching, and offers guidance for the development of ferroelectric-based electro-mechanical microelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lu You, Amr Abdelsamie, Yang Zhou, Lei Chang, Zhi Shiuh Lim, Junling Wang
Summary: The ferroelectric photovoltaic effect in BiFeO3-based vertical heterostructures is studied comprehensively to investigate its origin. It is found that the polarization-modulated Schottky barrier at the interface dominates the photovoltaic behavior under white light illumination. The selective interface contribution in different polarization states is observed, indicating the absence of bulk photovoltaic effect in vertical heterostructures under white light illumination.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Wan-Rong Geng, Yun-Long Tang, Yin-Lian Zhu, Yu-Jia Wang, Bo Wu, Li-Xin Yang, Yan-Peng Feng, Min-Jie Zou, Tong-Tong Shi, Yi Cao, Xiu-Liang Ma
Summary: This study demonstrates the existence of multi-field-driven magnetoelectric-optical coupling mediated by ferroelastic switching at room temperature. It provides a framework for designing potential multifunctional magnetoelectric devices.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Weiwei Mao, Qifu Yao, Nanjing Liu, Huazhong Shu, Jiangwei Zhu, Yong Pu, Xing'ao Li
Summary: The study showed that doping with Ca element can significantly enhance the photovoltaic performance of BFO thin film, with notable improvement in Voc and Jsc.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Ceramics
Marcos A. S. Mariano, Yanela Mendez-Gonzalez, Atair C. Silva, Adamo F. G. Monte, Elton C. Lima, Ruyan Guo, Amar S. Bhalla, Jose de los Santos Guerra
Summary: This study reports the multifunctional properties of lead-free BiFeO3-La (BFO-La) thin films, with a focus on the effects of lanthanum doping on structural and optical properties. Lanthanum doping was found to significantly affect defect concentrations, crystallinity, and optical absorption properties of the thin films. The Bi1-xLaxFeO3 (x = 0-20) compositions showed lower direct bandgap values and are considered potential candidate materials for high-performance photovoltaic devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Sirinya Ukasi, Paritta Jutapukti, Chiranicha Ninthub, Nattapong Pinpru, Phakkhananan Pakawanit, Wanwilai Vittayakorn, Satana Pongampai, Naratip Vittayakorn, Thitirat Charoonsuk
Summary: This study explores the enhancement of electrical output of flexible hybrid piezoelectric-triboelectric nanogenerators by incorporating gamma-glycine into fully organic composites. The research demonstrates the importance of optimized concentrations of gamma-glycine and chitosan in achieving superior performance. The study identifies the critical content of gamma-glycine that leads to the highest output signal, and provides theoretical explanations for this observation.
Article
Chemistry, Physical
Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee, Dongwhi Choi
Summary: In this study, a portable energy harvester (STEP) was proposed to drive various functional LEDs using biomechanical energy. The roles and functionalities of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) in the hybrid energy harvester were experimentally demonstrated, and the necessity of hybridization for LED-involved devices was described. The STEP showed promising potential as an effective energy supply strategy for various functional LEDs in related industries.
Article
Chemistry, Physical
Dae Sol Kong, Kyung Hoon Kim, Ying Chieh Hu, Jong Hun Kim, Inseo Kim, Jeongwan Lee, Joonhyuk Lee, Won Hyuk Shon, Hanjin Yoo, Chul-Un Ro, Seungsu Lee, Hyoungjeen Jeen, Minbaek Lee, Minseok Choi, Jong Hoon Jung
Summary: With the rapid development of the Internet of Things and artificial intelligence, smart home has emerged to fulfill the security, convenience, and energy-saving issues of modern life. A flexoelectric mica crystal is used to augment the finger touch-driven triboelectric output for operating a wireless and multichannel smart home controller. This work provides important ingredients for enhancing triboelectric output and realizing a convenient, multifunctional, cost-effective, and adaptable smart home control system without batteries.
Article
Chemistry, Physical
Yi Han, Fang Wu, Xiaozhen Du, Zihao Li, Haixiang Chen, Dongxing Guo, Junlei Wang, Hong Yu
Summary: This paper presents a novel type of triboelectric nanogenerator that utilizes wind energy, with a Y-type bluff body to enhance vibration and output power. The application of this generator successfully provides power for a wireless temperature and humidity sensor.
Article
Chemistry, Physical
Wen Zhang, Fangyuan Cheng, Miao Chang, Yue Xu, Yuyu Li, Shixiong Sun, Liang Wang, Leimin Xu, Qing Li, Chun Fang, Meng Wang, Yuhao Lu, Jiantao Han, Yunhui Huang
Summary: This study successfully induced the formation of a uniform and robust CEI by constructing ZrO2 nano-rivets on the surface of LCO, stabilizing the surface of high-voltage LCO and facilitating lithium-ion diffusion.
Article
Chemistry, Physical
Karl P. Olson, Laurence D. Marks
Summary: This paper investigates the role of contacting shapes in triboelectricity and provides scaling rules for designing energy harvesting devices.
Article
Chemistry, Physical
Jong-An Choi, Jingu Jeong, Mingyu Kang, Hee-Jin Ko, Taehoon Kim, Keun Park, Jongbaeg Kim, Soonjae Pyo
Summary: Wind-driven triboelectric nanogenerators (WTENGs) are a promising emerging technology for sustainable wind energy harvesting, offering high output performance, lightweight design, and compact dimensions. This study introduces an innovative WTENG design that leverages a rolling-based mechanism to achieve efficient omnidirectional wind energy harvesting.
Article
Chemistry, Physical
Liwei Dong, Qian Tang, Chaoyang Zhao, Guobiao Hu, Shuai Qu, Zicheng Liu, Yaowen Yang
Summary: This paper proposes a novel hybrid scheme for flag-type nanogenerators (FNGs) that enhances their performance and broadens their operational wind speed ranges by harnessing the synergistic potential of two aerodynamic behaviors. The proposed flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) integrates flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). The FTPNG achieves significant power generation and a broad wind speed range, surpassing other FNGs, making it suitable for various self-powered systems and Internet of Things applications.
Review
Chemistry, Physical
Yunmeng Li, Xin Liu, Zewei Ren, Jianjun Luo, Chi Zhang, Changyong (Chase) Cao, Hua Yuan, Yaokun Pang
Summary: The demand for green and eco-friendly materials is growing due to increasing environmental concerns related to traditional petroleum-based products. Marine biomaterials have emerged as a promising alternative, thanks to their abundant availability, biocompatibility, biodegradability, and low toxicity. In this review, we discuss the development and applications of triboelectric nanogenerators (TENGs) based on marine biomaterials. The operational modes, foundational principles, intrinsic qualities, and advantages of marine biomaterials commonly used in TENG designs are highlighted. Approaches to enhance the efficacy of TENGs derived from marine biomaterials are also discussed, along with documented applications from existing literature. Furthermore, the existing challenges and future directions in marine biomaterial-inspired TENGs are explored.
Article
Chemistry, Physical
Matthew P. Wells, Adam J. Lovett, Yizhi Zhang, Zhongxia Shang, Kosova Kreka, Babak Bakhit, Haiyan Wang, Albert Tarancon, Judith L. MacManus-Driscoll
Summary: Reversible solid oxide cells (rSOCs) offer a promising solution to efficient energy conversion, but have been limited in portable power and electrolysis applications due to excessive polarisation resistance of the oxygen electrode at low temperatures. This study demonstrates the growth of symmetric and complete rSOC structures with reduced polarisation resistance by tuning oxygen vacancy through annealing, providing a promising route towards high-performance rSOC devices for portable power applications.
Article
Chemistry, Physical
Kangkang Bao, Minghui Wang, Yue Zheng, Panpan Wang, Liwen Yang, Yang Jin, Hui Wu, Bin Sun
Summary: This study utilizes ethanol as an electrolyte additive to modulate the migration of zinc ions and the surface structure of zinc anodes, resulting in improved capacity retention and cycle life of zinc-based aqueous batteries.
Article
Chemistry, Physical
Haichao Yang, Wensi Cai, Ming Wang, Saif M. H. Qaid, Zhiyuan Xu, Huaxin Wang
Summary: The introduction of sodium alginate (SA) into perovskite solar cells improves the carrier dynamics, stability, and performance by inhibiting nonradiative recombination and retarded charge dynamics.
Article
Chemistry, Physical
Cuirong Zhang, Mingyuan Wei, Zihan Chen, Wansheng Lin, Shifan Yu, Yijing Xu, Chao Wei, Jinwei Zhang, Ziquan Guo, Yuanjin Zheng, Qingliang Liao, Xinqin Liao, Zhong Chen
Summary: Artificial Intelligence of Things (AIoT) aims to establish smart and informative interactions between humans and devices. However, common pixelated sensing arrays in AIoT applications present problems such as hard and brittle devices, complex structures, and low precision. This article introduces an innovative solution called the all-in-one intelligent semitransparent interactive nerve patch (AISI nerve patch), which integrates sensing, recognition, and transmission functionalities into a thin and flexible patch. The AISI nerve patch is semitransparent, allowing for accurate identification without affecting aesthetics, and it can be attached to any curved surface for intelligent and interactive applications. With rapid response time and high precision recognition, it enables the integration of artificial intelligence and achieves high recognition accuracy for further development of AIoT.
Article
Chemistry, Physical
Youcun Bai, Heng Zhang, Huijun Song, Chong Zhu, Lijin Yan, Qin Hu, Chang Ming Li
Summary: A novel stainless-steel supported lattice-mismatched V-S-Se layered compound with high selenium vacancy was synthesized by adjusting the molar ratio of sulfur to selenium. The introduction of selenium vacancies created additional redox peaks of sulfur, providing more mass transport channels and active sites for zinc ions. The specific capacity and cycle stability of the electrode were significantly improved, demonstrating great potential for practical applications and providing insights into the effects of defects on battery performance.
Article
Chemistry, Physical
Yao Xiao, Puxian Xiong, Yakun Le, Zhenjie Lun, Kang Chen, Zhiduo Wang, Peishan Shao, Zhicong Chen, Dongdan Chen, Zhongmin Yang
Summary: This study successfully synthesized a material with multi-stimulus-responsive luminescence and confirmed the internal relationship between luminescence and defects by regulating the distribution and depth of defects. The dynamic process of multi-stimulus-responsive luminescence was validated by experimental and calculation results.