JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 8
·5422-5429
·
IF 2.1
Xu Jiaxiong,Wu Xiaoshuai
Chalcogenide Cu 2 ZnSn(S,Se) 4 (CZTSSe) is a promising absorber material for photovoltaic applications. When CZTSSe thin film is deposited on an Mo substrate, a Mo(S,Se) 2 layer easily forms between the CZTSSe and the Mo, which is detrimental to the back contact property of the CZTSSe. This work proposes a useful way to inhibit the formation of Mo(S,Se) 2 by sputtering a CuCrO 2 layer on a Mo-foil substrate before the deposition of the CZTSSe. The effects of CuCrO 2 thickness on the crystalline structures, morphologies, and electrical properties of the fabricated samples were studied. The results showed that the insertion of the CuCrO 2 layer prevented the formation of Mo(S,Se) 2 . As the thickness of the CuCrO 2 increased, the thickness of the Mo(S,Se) 2 layer decreased. The Mo(S,Se) 2 layer was absent from the cross-sectional scanning electron microscopy image when the CuCrO 2 thickness exceeded 85 nm. The back contact resistance of CZTSSe decreased monotonously as the CuCrO 2 layer thickened due to the reduction in the Mo(S,Se) 2 layer thickness. Therefore, by inserting a CuCrO 2 layer to separate the CZTSSe and the Mo-foil, the formation of the Mo(S,Se) 2 layer between them was effectively suppressed, and the back contact properties of the CZTSSe thin film were significantly enhanced.
研究领域:
材料科学
·
光伏技术
·
薄膜太阳能电池
✓ 已验证
DOI
高影响因子
Journal of Nanomaterials
·
2014
·Vol. 2014
·期 1
·193201
·
IF 1.611
Yuan-Jun Song,Jing Chen,Jing-Yuan Wu,Tong Zhang
Silver nanowire has potential applications on transparent conducting film and electrode of electrochemical capacitor due to its excellent conductivity. Transparent conducting film (G-film) was prepared by coating silver nanowires on glass substrate using Meyer rod method, which exhibited better performance than carbon nanotube and graphene. The conductivity of G-film can be improved by increasing sintering temperature. Electrode of electrochemical capacitor (I-film) was fabricated through the same method with G-film on indium tin oxide (ITO). CV curves of I-film under different scanning rates had obvious redox peaks, which indicated that I-film exhibited excellent electrochemical pseudocapacitance performance and good reversibility during charge/discharge process. In addition, the specific capacitance of I-film was measured by galvanostatic charge/discharge experiments, indicating that I-film exhibits high special capacitance and excellent electrochemical stability.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2022
·Vol. 51
·期 12
·6885-6893
·
IF 2.047
Song Angang,Cao Guoqin,Zhu Di,Zhao Baofeng,Fu Zhenya,Cao Shuaiqi,Wang Qingjie,Hu Junhua
Nb-doped TiO 2 (NTO) thin films were sputtered on glass substrate followed by a simple annealing process in air. The photoelectric cooperative optimization was discussed based on the structural, optical and electrical characteristics. The influence of oxygen flow during deposition on materials chemistry and performance was analyzed. Hall measurement showed a strong dependence of transparent conductivity on the oxygen flow. Oxygen vacancies are related to the phase transitions from the rutile to anatase TiO 2 during annealing. The chemical states of Nb, Ti and O before and after annealing were discussed. The achievement of optimized transparent conductivity was resultant from the fine-tuning of the doped chemistry and special interplay of dopants and host lattice. Graphical
研究领域:
材料科学
·
薄膜技术
·
固体物理
·
光电材料
·
无机非金属材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 33
·18690-18697
·
IF 2.936
Qian Liu,Zijie Xu,Wu Qiu,Chen Hou,Yanan Wang,Peijian Yao,Rui Yu,Wenxi Guo,Xiang Yang Liu
Ultraflexible electronics have received extensive attention due to their favorable properties, such as superior mechanical robustness, light weight and good compatibility with large-area roll-to-roll fabrication. Here we present a flexible sandwiched tungsten trioxide/silver nanotrough network/poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) multi-layer transparent conducting electrode with prominent conductivity (sheet resistance as low as 1.08 Ω sq−1) and transparency (85%). In particular, the flexible transparent electrode exhibits excellent mechanical robustness upon bending and stretching. This hybrid electrode can be further adhered tightly to a layer of WO3 to form an electrochromic device, which simultaneously displays a rapid switching time (0.75 s/1.82 s for bleaching/coloring) and high cyclic performance (86% retention of the initial optical contrast after cycling for 30 000 s). In addition, our electrode can also be fabricated on various flexible substrates, such as polyethylene cling wrap, polydimethylsiloxane and Ecoflex, with sustained electrochromic properties after bending, twisting, stretching and even strong kneading. Our work provides new opportunities for the next generation of flexible and wearable electronics applied on various flexible substrates.
研究领域:
材料科学
·
纳米科技
·
柔性电子学
·
功能材料
·
电化学
·
高分子材料
·
器件物理
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 8
·期 13
·2100548
·
IF 6.147
Dongdong Li,Wen-Yong Lai,Fang Feng,Wei Huang
Screen printing is an important technique for creating 2D conductive patterns with high conductivity and resolution. Non-conductive additives are thus required in printable ink formulation in order to achieve appropriate viscosity and rheological behaviors. However, it is still a challenge to recover the conductivity of the printed networks after screen printing, while keeping the integrity of the patterns during repeated water-washing. Herein, a series of post-treatments are introduced into the washing process in order to achieve high-quality silver nanowire (Ag NW) transparent conductive films. Screen-printed patterns can be well maintained because of the enhanced adhesion between the Ag NW networks and flexible poly(ethylene terephthalate) substrates. High-performance transparent conductive film with extremely low sheet resistance (0.72 Ω sq −1 ) is achieved by combining plasma treatment, thermal annealing, and high pressure, making screen-printed Ag NW conductive networks promising to be used in the next-generation flexible optoelectronic devices.
研究领域:
材料科学
·
纳米技术
·
电子学
·
光电子学
·
高分子科学
✓ 已验证
DOI
高影响因子
NANO LETTERS
·
2015
·
IF 13.592
Na Li,Gongzheng Yang,Yong Sun,Huawei Song,Hao Cui,Guowei Yang,Chengxin Wang
Transparency has never been integrated into freestanding flexible graphene paper (FF-GP), although FF-GP has been discussed extensively, because a thin transparent graphene sheet will fracture easily when the template or substrate is removed using traditional methods. Here, transparent FF-GP (FFT-GP) was developed using NaCl as the template and was applied in transparent and stretchable supercapacitors. The capacitance was improved by nearly 1000-fold compared with that of the laminated or wrinkled chemical vapor deposition graphene-film-based supercapacitors.
研究领域:
材料科学
·
纳米科技
·
能源材料
·
柔性电子学
·
电化学储能
·
功能薄膜材料
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Zhelu Hu,Kai Xia,Jing Zhang,Ziyang Hu,Yuejin Zhu
Highly transparent metal sulfides (Ni 3 S 4 , MoS 2 ) are directly deposited on fluorine doped tin oxide (FTO) substrates as effective Pt-free counter electrodes (CEs) for novel bifacial dye-sensitized solar cells (DSSCs). The blocky-like Ni 3 S 4 and petal-shaped MoS 2 nanoparticles (NPs) possess large surface area, which provides amount of active site to contact with electrolyte. The films not only show high transmittance at visible wavelengths, but also exhibit prominent electrocataltytic activity and outstanding metallic conductivity in iodine/iodide based bifacial DSSCs. Under front-side irradiation (100 mW/cm 2 ), the bifacial DSSC based on the transparent Ni 3 S 4 or MoS 2 CE presents remarkable photovoltaic conversion efficiency (E ff = 6.56%, 6.11%, respectively), closing to that of conventional Pt CE (E ff = 6.83%). Moreover, by appending an ordinary mirror as a photo reflector to achieve both-side illumination, the bifacial DSSC using the transparent Ni 3 S 4 or MoS 2 sample as CE obtained higher short-circuit current density (J sc ) and more attractive power conversion efficiency (PCE) (E ff = 7.06%, 6.65%, respectively). It indicates that the as-prepared transparent Ni 3 S 4 and MoS 2 CEs are promising potential candidates to explore low-cost and high-efficiency bifacial DSSCs.
研究领域:
材料科学
·
光伏技术
·
纳米材料
·
能源化学
·
半导体器件
✓ 已验证
DOI
高影响因子
Science Bulletin
·
2019
·
IF 6.277
Teng Li,Shengyou Li,Xuyi Li,Zijie Xu,Jizhong Zhao,Yating Shi,Yanan Wang,Rui Yu,Xiangyang Liu,Qingchi Xu,Wenxi Guo
As essential components of numerous flexible and wearable optoelectronic devices, the flexible transparent conducting electrodes (TCEs) with sufficient optical transmittance and electric conductivity become more and more important. In this work, we fabricated a large-area flexible TCE based on leaf vein-like hierarchical metal grids (HMG) comprising of mesoscale “trunk” and microscale “branches”. The self-formed branched grids made the conducting paths distributing uniformly while the laser-etching trunk grids enabled to transport the collected electrons across long-distance. The Ag HMG exhibited high optical transmittance (~81%) with low sheet resistance (1.36 Ω sq –1 ), which could be simply optimized through adjusting the grids’ widths, spaces, and the sizes of the TiO 2 colloidal crackle patterns. In addition, on the basis of such advanced HMG electrode, flexible electrochromic devices (ECDs) with remarkable cyclic performance were fabricated. The HMG with high transparency, conductivity, and flexibility provides a promising TCE for the next-generation flexible and wearable optoelectronic devices.
研究领域:
材料科学
·
纳米科技
·
柔性电子学
·
光电子学
·
表面工程
·
功能材料
·
智能窗口技术
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Lixin Song,Tianwei Wang,Wanru Jing,Xueyao Xie,Pingfan Du,Jie Xiong
Power source is a core component of wearable electronic device. To obtain a suitable power source, the highly flexible MoS 2 /TiC/C nanofibrous (NFs) film was prepared and employed as the Pt-free and transparent conductive oxide (TCO)-free counter electrode (CE) of flexible dye-sensitized solar cell (FDSSC). Then the FDSSC was combined with a fabric to form a photovoltaic textile. Notably, there was no substrate of CE in the device due to the desired mechanical property of the MoS 2 /TiC/C NFs film. The obtained FDSSC based photovoltaic textile possessed power conversion efficiency of 5.08%, which was larger than that of Pt based device. The main reasons may be the large BET surface area and promising electrocatalytic activity of the MoS 2 /TiC/C CE. Besides, the combination of FDSSC with fabric was extremely easy and simple. Hence, the photovoltaic textile exhibited huge potential applications in smart textile for wearable electronic devices.
研究领域:
材料科学
·
纳米能源
·
柔性电子学
·
光电转换
·
智能纺织品
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Lixin Song,Xin Yin,Xueyao Xie,Pingfan Du,Jie Xiong,Frank Ko
In this study, highly flexible TiO 2 /C nanofibrous film was fabricated via electrospinning followed by thermostabilization and carbonizaiton. These nanofibers (NFs) composed of carbon and TiO 2 nanoparticles (NPs) with incorporation of TiO 2 NPs into carbon matrix. The content of polyvinylpyrrolidone (PVP) and titanium (IV) isopropoxide (TiP) were adjusted to optimize the performance of the TiO 2 /C nanofibrous film. The results show that the average diameter of TiO 2 /C NFs and the content of carbon in NFs decreased as the proportion of PVP increased. With addition of PVP, TiO 2 NPs distributed more uniformly. With increase of TiP, the average diameter and content of TiO 2 increased. As a result, the conductivity decreased with the increase of PVP and TiP. While, the flexibility increased, reaching a best value before decreasing as the PVP and TiP increased. The TiO 2 /C nanofibrous film presented best flexibility with the content of PVP and TiP of 50% and 0.7 g. Notably, the flexible TiO 2 /C nanofibrous film showed pleasurable catalytic activity. Therefore, the TiO 2 /C nanofibrous film served as platinum (Pt)- and transparent conducting oxide (TCO)-free counter electrode (CE) for flexible dye-sensitized solar cells (FDSSCs). Besides, the TiO 2 /C nanofibrous film CE withstood large deformation of bending and exhibited excellent bending stability.
研究领域:
材料科学
·
纳米科技
·
能源材料
·
光电化学
·
柔性电子学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）