scholarly journals Preparation of ZnO/Bi2O3 Composites as Heterogeneous Thin Film Materials with High Photoelectric Performance on FTO Base

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1140
Author(s):  
Yuhan Nie ◽  
Yadong Xie ◽  
Ying Zheng ◽  
Yao Luo ◽  
Jianguo Zhang ◽  
...  
Keyword(s):  
Energy Gap ◽  
Heterogeneous Material ◽  
Nanorod Array ◽  
Film Structure ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Bismuth Trioxide ◽  
Energy Applications ◽  
Conductive Glass ◽  
Conversion Performance

In recent years, ZnO nanomaterials have achieved great performance in solar energy applications. How to synthesize a ZnO nanocomposite structure with high photoelectric conversion efficiency has become an urgent problem to solved. In this paper, a narrow band gap bismuth trioxide (Bi2O3) coated on a ZnO nanoarray by magnetron sputtering was used to prepare a composite heterojunction ZnO/Bi2O3. Studies have found that ZnO/Bi2O3 exhibits excellent photoelectric conversion performance. By preparing a composite heterostructure of ZnO/Bi2O3, it can effectively compensate for the insufficient absorption of ZnO in the visible light range and inhibit the recombination of carriers within the material. The influence of Bi2O3 thickness on the microstructure and electronic structure of the ZnO/Bi2O3 composite structure was explored and analyzed. The energy gap width of the composite heterostructure decreases with the increase in the Bi2O3 thickness on the surface of the ZnO nanorod array. At the same time, the conductive glass composite film structure is simple to prepare and is very environmentally friendly. The ZnO/Bi2O3 composite heterogeneous material prepared this time is suitable for solar cells, photodetectors, photocatalysis and other fields.

Influence of the Mole Ratio of Salt to Alkali on the Surface Structure of SnO2 Thin Film

2018 ◽  
Vol 279 ◽  
pp. 192-196
Author(s):  
Yue Liu ◽  
Ge Xiong ◽  
Yan Yang ◽  
Long He ◽  
Mei Hua Chen ◽  
...  
Keyword(s):  
Oxide Film ◽  
Tin Oxide ◽  
Molar Ratio ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Bonding Force ◽  
Conductive Glass ◽  
Film Forming ◽  
Conversion Performance ◽  
Macroscopic Analysis

This work investigated the effects of molar ratio of salt to alkali on the properties of tin oxide nanofilms to provide reference for optimizing its photoelectric conversion efficiency. The tin oxide film grown by hydrothermal method exhibited poor film-forming property. The macroscopic analysis revealed the formation of a thick film. The bonding force to the FTO substrate was poor, its brittle, and easy to fall off. When the molar ratio of salt to alkali was 1:8, the tin oxide film exhibited improved microstructure and large specific surface area, which could benefit electron transport. Moreover, the film showed excellent photoelectric conversion performance. However, mechanical properties, such as adhesion between the tin oxide film and the conductive glass FTO, remain to be improved.

Preparation and Optical Properties of TiO2 Film with a Nest-Like Structure by Three Times of Circulating Hydrothermal Method

NANO ◽  
2016 ◽  
Vol 11 (06) ◽  
pp. 1650066 ◽  
Author(s):  
Quangui He ◽  
Jia Zhuang ◽  
Qiuxiang Wen ◽  
Yang Deng ◽  
Jun Yu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Hydrothermal Method ◽  
Three Dimensional ◽  
Dye Adsorption ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Facile Hydrothermal Method ◽  
Conductive Glass ◽  
Photoelectric Properties ◽  
Adsorption Amount

An anatase TiO2 photoanode with a novel three-dimensional nest-like structure was prepared directly on a transparent conductive glass substrate through hydrothermal cycles by three times. First, an unidirectional banded structure film was prepared by a facile hydrothermal method. And then, with the time of hydrothermal cycle increased, part of nanobelts were ruptured into a lot of small polyhedrons, but they still maintained a trend of the previous connection, and some fine nanobelts were interweaved in small polyhedrons. Finally, we successfully prepared a film with a novel 3D nest-like structure, and it had all the characteristics of the hierarchitectures. It had better photoelectric properties than the film with fewer times of hydrothermal cycle. Its photoelectric conversion efficiency reached 3.81%, which is due to a large dye adsorption amount, rapid electronic transmission, and superior light scattering and more electrons transmission paths.

scholarly journals Sb2S3Quantum-Dot Sensitized Solar Cells with Silicon Nanowire Photoelectrode

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
You-Da Hsieh ◽  
Ming-Way Lee ◽  
Gou-Jen Wang
Keyword(s):  
Quantum Dot ◽  
Conversion Efficiency ◽  
Silicon Substrate ◽  
Short Circuit ◽  
Nanorod Array ◽  
Open Circuit ◽  
Photoelectric Conversion Efficiency ◽  
Xenon Lamp ◽  
Photoelectric Conversion ◽  
Semiconductor Silicon

We propose a novel quantum-dot sensitized solar cell (QDSSC) structure that employs a quantum dot/semiconductor silicon (QD/Si) coaxial nanorod array to replace the conventional dye/TiO2/TCO photoelectrode. We replaced the backlight input mode with top-side illumination and used a quantum dot to replace dye as the light-absorbing material. Photon-excited photoelectrons can be effectively transported to each silicon nanorod and conveyed to the counter electrode. We use two-stage metal-assisted etching (MAE) to fabricate the micro-nano hybrid structure on a silicon substrate. We then use the chemical bath deposition (CBD) method to synthesize a Sb2S3quantum dot on the surface of each silicon nanorod to form the photoelectrode for the quantum dot/semiconductor silicon coaxial nanorod array. We use a xenon lamp to simulate AM 1.5 G (1000 W/m2) sunlight. Then, we investigate the influence of different silicon nanorod arrays and CBD deposition times on the photoelectric conversion efficiency. When an NH (N-type with high resistance) silicon substrate is used, the QD/Si coaxial nanorod array synthesized by three runs of Sb2S3deposition shows the highest photoelectric conversion efficiency of 0.253%. The corresponding short-circuit current density, open-circuit voltage, and fill factor are 5.19 mA/cm2, 0.24 V, and 20.33%, respectively.

Synthesis of Rare Earth Up-Conversion Material and Application in the Dye-Sensitized Solar Cells

2012 ◽  
Vol 512-515 ◽  
pp. 289-292
Author(s):  
Jun Zhang ◽  
Ying Hong Qu ◽  
Feng Xiang Zhang ◽  
Xiang Da Peng ◽  
Si Yu Qian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Infrared Light ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Force Microscopy ◽  
Dye Sensitized ◽  
Conversion Performance ◽  
Sensitized Solar Cells

Er3+,Yb3+:Y2O3nanocrystal up-conversion material has been prepared using the sodium carbonate precursor method and doped in the P25 to prepare up-conversion nano-TiO2powder. The micromorphology, structure and particle size of the up-converting nanoparticles were characterized by atom force microscopy (AFM) and X-ray diffraction (XRD). Nano-TiO2powder with up-conversion performance was applied to Dye-sensitized solar cells, the photoelectric conversion efficiency of the DSSC with up-conversion material is twice the photoelectric conversion efficiency of normal DSSC irradiated by infrared light.

Synthesis of Polythiophene Derivatives with Schiff Base Groups and Use as an Active Layer in Polymer Solar Cell Devices

2015 ◽  
Vol 815 ◽  
pp. 668-674 ◽  
Author(s):  
Wei Xing Chen ◽  
Ping Chui ◽  
Ai Jie Ma ◽  
Chun Yan Luo ◽  
Yong Qian Gu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Schiff Bases ◽  
Energy Gap ◽  
Average Molecular Weight ◽  
Chemical Oxidation ◽  
Open Circuit ◽  
Luminescence Spectra ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
H Nmr

Two kinds of Schiff bases polymers named P3TA4A and P3TA4B were prepared by the chemical oxidation method. The structures of Schiff bases polymers were determined by FT-IR and1H NMR. The GPC result showed that the number-average molecular weight of P3TA4A and P3TA4B was 7400 g/mol and 12500 g/mol with a molecular weight distribution of 1.63 and 1.27, respectively. The cyclic voltammetry curves showed that the energy gap of P3TA4A and P3TA4B was 1.929 eV and 1.944 eV, respectively. Ultraviolet-visible spectra and Luminescence spectra showed that the maximum absorption and maximum emission wavelength of was 275 nm, 400 nm for P3TA4A and 448 nm, 451 nm for P3TA4B. The open-circuit voltage of the polymer solar devices was 3 mv and 2.5 mv, respectively. The results indicated that the Schiff bases substituents at the 3-position of polythiophenes play an important role on the photoelectric conversion efficiency of conducting polymers.

Influence of Synthesis Temperature on the Properties of SnO2 Thin Films via Hydrothermal Precipitation Method

2018 ◽  
Vol 281 ◽  
pp. 699-704
Author(s):  
Yue Liu ◽  
Jia Zhang ◽  
Cai Liang Pang ◽  
Zong Li Wang ◽  
Jin Shi Li ◽  
...  
Keyword(s):  
Tin Dioxide ◽  
Film Growth ◽  
Synthesis Temperature ◽  
Treatment Temperature ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Hydrothermal Temperature ◽  
Conductive Glass

To provide reference for optimizing the photoelectric conversion efficiency, we studied the effects of salt–alkali molar ratio on the properties of tin oxide nanofilms. We found that when the hydrothermal temperature was increased to 80 °C, the film growth was not complete. With a hydrothermal temperature of 120 °C, the film became more complete and structured. However, at 160 °C, thick and very irregular tin dioxide (SnO2) crystal particles were deposited on the FTO conductive glass surface. With the increase in heat treatment temperature, crystallization became more and more dense and complete. At 80 °C hydrothermal temperature, the simulated peak of the surface and number of peaks became smaller. However, they significantly increased with a hydrothermal temperature of 120 °C. When the hydrothermal temperature was at 160 °C, the surface simulated peak increased, but the number of peaks decreased. Moreover, the diameter of each peak was greatly increased. The film obtained via the hydrothermal method was relatively pure, and Sn(OH)3 was not completely converted into SnO2.

POTENTIAL EVALUATION OF YELLOW COTTON (COCHLOSPERMUM REGIUM) PIGMENTS FOR DYE SENSITIZED SOLAR CELLS APPLICATION

2020 ◽  
pp. 16-21
Author(s):  
PHITCHAPHORN KHAMMEE ◽  
YUWALEE UNPAPROM ◽  
UBONWAN SUBHASAEN ◽  
RAMESHPRABU RAMARAJ
Keyword(s):  
Solar Cells ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion Efficiency ◽  
Photoelectric Conversion ◽  
Plant Materials ◽  
Natural Pigments ◽  
Dye Sensitized ◽  
Study Results ◽  
Sensitized Solar Cells

Recently, dye-sensitized solar cells (DSSC) have concerned significant attention attributable to their material preparation process, architectural and environmental compatibility, also low cost and effective photoelectric conversion efficiency. Therefore, this study aimed to use potential plant materials for DSSC. This research presents the extraction of natural pigments from yellow cotton flowers (Cochlospermum regium). In addition, the natural pigments were revealed that outstanding advantages, including a wide absorption range (visible light), easy extraction method, safe, innocuous pigments, inexpensive, complete biodegradation and ecofriendly. Methanol was used as a solvent extraction for the yellow cotton flower. The chlorophylls and carotenoid pigments extractions were estimated by a UV-visible spectrometer. The chlorophyll-a, chlorophyll-b, and carotenoid yield were 0.719±0.061 µg/ml, 1.484±0.107 µg/ml and 7.743±0.141 µg/ml, respectively. Thus, this study results suggested that yellow cotton flowers containing reasonable amounts appealable in the DSSC production.

Interfacial self-assembly engineering for constructing a 2D flexible superlattice polyoxometalate/rGO heterojunction for high-performance photovoltaic devices

2020 ◽  
Vol 49 (12) ◽  
pp. 3766-3774 ◽  
Author(s):  
Jianping Li ◽  
Dai Wu ◽  
Chunlei Wang ◽  
Ding Liu ◽  
Weilin Chen ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Self Assembly ◽  
High Performance ◽  
Photoelectric Conversion Efficiency ◽  
Photovoltaic Devices ◽  
Photoelectric Conversion

The strategy of constructing a 2D flexible superlattice polyoxometalate/rGO heterojunction is proposed to improve the photoelectric conversion efficiency of photovoltaic devices.

scholarly journals Correction: Novel Au inlaid Zn2SnO4/SnO2 hollow rounded cubes for dye-sensitized solar cells with enhanced photoelectric conversion performance

2021 ◽  
Author(s):  
Bo Li ◽  
Enyan Guo ◽  
Chengxiang Wang ◽  
Longwei Yin
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Photoelectric Conversion ◽  
Dye Sensitized ◽  
Conversion Performance ◽  
Sensitized Solar Cells

Correction for ‘Novel Au inlaid Zn2SnO4/SnO2 hollow rounded cubes for dye-sensitized solar cells with enhanced photoelectric conversion performance’ by Bo Li et al., J. Mater. Chem. A, 2016, 4, 466–477, DOI: 10.1039/C5TA06889D.

Sign in / Sign up

Export Citation Format

Share Document