BIOSENSORS & BIOELECTRONICS
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2015
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IF 6.409
Zheng-peng Yang,Xuan Liu,Chun-jing Zhang,Bao-zhong Liu
Transparent photocatalytic surfaces are of ever increasing importance for the enhancement of the photocatalytic efficiency. Here, the highly ordered transparent TiO 2 nanotube arrays were prepared by the anodization and thermal annealing of titanium layer deposited onto the glass substrate , and a novel nonenzymatic piezoelectric sensor was developed for urea detection based on the modification of molecularly imprinted TiO 2 thin film onto transparent TiO 2 nanotube arrays. The performance of the fabricated sensor was evaluated and the results indicated that the sensor exhibited high sensitivity in urea detection, with a linear range from 0.04 to 120 μM and a limit of detection of 0.01 μM. Moreover, the sensor presented outstanding selectivity while used in coexisting systems containing various interferents with high concentration. The analytical application of the urea sensor confirmed the feasibility of urea detection in urine sample.
研究领域:
生物传感技术
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2023
·
IF 5.9
Yi Jiang,Yile Dai,Xianfei Xie,Qing Wang,Jianfeng Dai
In this work, we propose a strategy that is different from the traditional technology of increasing the specific area of the TiO2 film to improve the carrying capacity of QDs in QDSSCs. Transparent anatase TiO2 films are prepared by improving the optical transmittance of the photoanode TiO2 film so that the attached QDs can capture more photons and improve the efficiency of utilizing QDs. This QDSSC preparation technology sacrifices part of QDs loading but improves the utilization efficiency of QDs. At the same time, the transparent bulk TiO2 film decreases the transmission distance of photogenerated charge carriers, reduces the cross-interface transport, optimizes the transmission path, and reduces the carrier capture composite rate compared with the TiO2 particle film. Therefore, it not only increases the Voc, FF, and PCE of QDSSCs to 0.628 V, 54.7, and 6.166%, respectively, but also has greater transparency. It meets the demand for solar cell transparency in practical applications and has a wider range of applications and better aesthetics. The mechanism simulation and theoretical analysis of photothermal conversion and electromagnetic mechanism show that the barrier of carrier transfer in bulk transparent anatase TiO2 is lower than the physical barrier between anatase TiO2 NPs. The advantages of the anatase transparent TiO2 film in the process of photogenerated charge carrier transmission are verified. It provides an idea for the development of QDSSCs. It also brings the technology of transparent TiO2 film to related fields.
研究领域:
材料科学
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光伏技术
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界面物理
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产品关联
DOI
高影响因子
ACS Applied Energy Materials
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2022
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IF 6.959
Yi Jiang,Yile Dai,Qing Wang,Jianfeng Dai
While transparent photoanodes are highly desired for smart energy devices, their performance is still far from expectation. In the present work, a transparent TiO2 film was prepared using a two-step spin-coating method, which served as photoanodes of quantum dot-sensitized solar cells (QDSSCs). A porous TiO2 photoanode prepared by P25 was also fabricated for comparison. Compared with the porous TiO2 photoanode, QDSSCs based on the transparent TiO2 film showed an obviously declined short-circuit current density (Jsc) but greatly improved fill factor (54.3%), resulting in a larger power conversion efficiency (4.32%). The reason is due to the decreased series resistance and increased shunt resistance of solar cells based on the transparent TiO2 photoanode, which is consistent with the requirement of solar cells to load resistance. The present work proves that the transparent TiO2 film has great potential in the field of transparent solar cells.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 6
·3049-3056
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IF 2.961
Xu Bozheng,Wang Liying,Li Xuesong,Yang Xijia,Lü Wei
While transparent photoanode is highly desired for energy devices, its performance is still far from expectation. In the present work, a facile strategy was developed to prepare transparent TiO 2 films as photoanodes of quantum dot–sensitized solar cells (QDSSCs). Different TiO 2 nanoparticles (P25, rutile, anatase) were dispersed in C 16 H 36 O 4 Ti included solution and spin-coated on FTO glass, which is followed by sintering. The as-prepared TiO 2 films were used as photoanodes of QDSSCs. It has been shown that QDSSCs assembled by TiO 2 film prepared by P25 and N-butyl titanate slurry achieved the best performance. The transparency could be controlled by coating times, and the three-layer TiO 2 film showed the best performance with 2.70% of power conversion efficiency. Our work simplified the preparation process of TiO 2 slurry, shortened the preparation time, and realized the control of the crystal type proportion ofTiO 2 . It provides a new method for preparing transparent TiO 2 thin film for QDSSCs.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2021
·
IF 1.556
Zhenyu Hu,Ruifeng Zheng,Wei Lü,Jialun Li,Xuesong Li,Yi Jiang,Xijia Yang,Liying Wang
While transparent solar cells are highly desired for smart energy devices, the general fabrication method is to sacrifice the film thickness of an electrode in exchange for a certain light transmittance, which limits the device performance. In this work, we developed a facile and economic strategy to prepare transparent TiO 2 films, which involved spin-coating n-butyl titanate on conductive FTO glass and sintering at suitable temperature. A transmittance up to ∼ 9 0 % in the visible and infrared range could be achieved. With the transparent TiO 2 film as photoanode of quantum dot sensitized solar cells, the highest power conversion efficiency was 2.92%. This work inspires new ways for the transparent electrode preparation of solar cells and provides a flexible and practical approach to anti-ultraviolet work, demonstrating its application potential in related fields.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
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