scholarly journals Enhanced Photovoltaic Properties of the Solar Cells Based on Cosensitization of CdS and Hydrogenation

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Hongcai He ◽  
Kui Yang ◽  
Shuangshuang Ren ◽  
Tao Liu ◽  
Ning Wang
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Photovoltaic Performance ◽  
Visible Region ◽  
Cds Nanoparticles ◽  
Cds Quantum Dots ◽  
Silar Method ◽  
Photovoltaic Properties ◽  
Enhanced Absorption

The hydrogenated TiO2porous nanocrystalline film is modified with CdS quantum dots by successive ionic layer adsorption and reaction (SILAR) method to prepare the cosensitized TiO2solar cells by CdS quantum dots and hydrogenation. The structure and topography of the composite photoanode film were confirmed by X-ray diffraction and scanning electron microscopy. With deposited CdS nanoparticles, UV absorption spectra of H:TiO2photoanode film indicated a considerably enhanced absorption in the visible region. The cosensitized TiO2solar cell by CdS quantum dots and hydrogenation presents much better photovoltaic properties than either CdS sensitized TiO2solar cells or hydrogenated TiO2solar cells, which displays enhanced photovoltaic performance with power conversion efficiency (η) of 1.99% (Jsc=6.26 mA cm−2,Voc=0.65 V, and FF = 0.49) under full one-sun illumination. The reason for the enhanced photovoltaic performance of the novel cosensitized solar cell is primarily explained by studying the Nyquist spectrums, IPCE spectra, dark current, and photovoltaic performances.

scholarly journals Annealing Effect on Photovoltaic Performance of CdSe Quantum-Dots-Sensitized TiO2Nanorod Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Yitan Li ◽  
Lin Wei ◽  
Ruizi Zhang ◽  
Yanxue Chen ◽  
Jun Jiao
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Solar Cell ◽  
Photovoltaic Performance ◽  
Annealing Treatment ◽  
Annealing Effect ◽  
Cdse Quantum Dots ◽  
Nanorod Arrays ◽  
Large Area ◽  
Photovoltaic Properties

Large area rutile TiO2nanorod arrays were grown on F:SnO2(FTO) conductive glass using a hydrothermal method at low temperature. CdSe quantum dots (QDs) were deposited onto single-crystalline TiO2nanorod arrays by a chemical bath deposition (CBD) method to make a photoelectrode. The solar cell was assembled using a CdSe-TiO2nanostructure as the photoanode and polysulfide solution as the electrolyte. The annealing effect on optical and photovoltaic properties of CdSe quantum-dots-sensitized TiO2nanorod solar cells was studied systematically. A significant change of the morphology and a regular red shift of band gap of CdSe nanoparticles were observed after annealing treatment. At the same time, an improved photovoltaic performance was obtained for quantum-dots-sensitized solar cell using the annealed CdSe-TiO2nanostructure electrode. The power conversion efficiency improved from 0.59% to 1.45% as a consequence of the annealing effect. This improvement can be explained by considering the changes in the morphology, the crystalline quality, and the optical properties caused by annealing treatment.

Enhanced photovoltaic performance of quantum dot-sensitized solar cells with a progressive reduction of recombination using Cu-doped CdS quantum dots

2017 ◽  
Vol 396 ◽  
pp. 582-589 ◽  
Author(s):  
Mohammed Panthakkal Abdul Muthalif ◽  
Young-Seok Lee ◽  
Chozhidakath Damodharan Sunesh ◽  
Hee-Je Kim ◽  
Youngson Choe
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Photovoltaic Performance ◽  
Cds Quantum Dots ◽  
Progressive Reduction ◽  
Sensitized Solar Cells

Photovoltaic properties of multilayered quantum dot/quantum rod-sensitized TiO2 solar cells fabricated by SILAR and electrophoresis

2015 ◽  
Vol 17 (28) ◽  
pp. 18590-18599 ◽  
Author(s):  
Andrea Cerdán-Pasarán ◽  
Tzarara López-Luke ◽  
Diego Esparza ◽  
Isaac Zarazúa ◽  
Elder De la Rosa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Cds Quantum Dots ◽  
Photovoltaic Properties ◽  
Quantum Rods ◽  
Quantum Rod

A multilayered semiconductor sensitizer structure composed of three differently sized CdSe quantum rods and CdS quantum dots.

Preparation of B-doped Si quantum dots embedded in SiNx films for Si quantum dot solar cells

2018 ◽  
Vol 32 (02) ◽  
pp. 1850003
Author(s):  
Xiaobo Chen ◽  
Peizhi Yang
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Photovoltaic Performance ◽  
Doping Amount ◽  
Photovoltaic Properties ◽  
Heterojunction Solar Cells ◽  
Si Quantum Dot ◽  
Quantum Dot Solar Cells ◽  
The Matrix ◽  
B Doping

Silicon quantum dots (Si-QDs) embedded B-doped SiN[Formula: see text] films were fabricated by magnetron co-sputtering. The effects of B content on the structural, optical and electrical properties of the films were studied. The study found that the amount of B dopant has no significant effect on the crystallization characteristics of the films. B atoms may be doped in the Si-QDs or exist in the silicon nitride or the interface between Si-QDs and the matrix. PL intensity increases with increasing B content, but increases at first and then decreases. The conductivity as a function of the dopant concentration increases at first from a value of 2.71 × 10[Formula: see text] S/cm to 5.83 × 10[Formula: see text] S/cm until 0.9 at.% and then decreases. By employing B-doped Si-QDs films, Si-QDs/c-Si heterojunction solar cells were fabricated and the effect of B doping concentration on the photovoltaic properties was studied. It was found that, with the increase of B doping amount, the photovoltaic performance is improved, when the B doping amount is 0.9 at.%, the efficiency reaches the highest value of 4.26%.

Influence of citric acid linker molecule on photovoltaic performance of CdS quantum dots-sensitized TiO2 solar cells

2021 ◽  
Vol 44 (3) ◽  
Author(s):  
G K R Senadeera ◽  
W I Sandamali ◽  
M A K L Dissanayake ◽  
T Jaseetharan ◽  
V P S Perera ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Citric Acid ◽  
Photovoltaic Performance ◽  
Cds Quantum Dots

Study on Preparation of CdS Quantum Dots for Dye Sensitized Solar Cells

2014 ◽  
Vol 1070-1072 ◽  
pp. 608-611
Author(s):  
Xiang Yu Wan ◽  
Xing An Mei ◽  
Yong Hong Tian ◽  
Da Hai Xu ◽  
Yan Xiong
Keyword(s):  
Quantum Dots ◽  
Solar Cell ◽  
Quantum Dot ◽  
High Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Cds Quantum Dots ◽  
Silar Method ◽  
Dye Sensitized ◽  
Layer Adsorption ◽  
Sensitized Solar Cells

Quantum dot sensitized solar cell (QDSSC) has a potential high efficiency as the third generation solar cell, on account of the excellent performance of quantum dots. CdS is one of the most widely used quantum dot of QDSSCs, hence the optimization of its preparation process is extremely important. CdS quantum dots prepared in aqueous or alcohol on TiO2 film by successive ionic layer adsorption and reaction (SILAR) method are investigated and alcohol is found to be better than water as the precursor solvent.

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