scholarly journals A simple one step process for enhancement of titanium foil dye sensitised solar cell anodes

2015 ◽  
Vol 3 (7) ◽  
pp. 3266-3270 ◽  
Author(s):  
J. Linnemann ◽  
J. Giorgio ◽  
K. Wagner ◽  
G. Mathieson ◽  
G. G. Wallace ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Nitric Acid ◽  
Acid Treatment ◽  
Photovoltaic Performance ◽  
Titanium Foil ◽  
Step Process ◽  
One Step

This communication highlights a simple nitric acid treatment, which enhances the properties of titanium foil and improves the photovoltaic performance of dye sensitised solar cells.

scholarly journals Selected Electrochemical Properties of 4,4’-((1E,1’E)-((1,2,4-Thiadiazole-3,5-diyl)bis(azaneylylidene))bis(methaneylylidene))bis(N,N-di-p-tolylaniline) towards Perovskite Solar Cells with 14.4% Efficiency

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2440 ◽  
Author(s):  
Krzysztof Artur Bogdanowicz ◽  
Beata Jewłoszewicz ◽  
Agnieszka Iwan ◽  
Karolina Dysz ◽  
Wojciech Przybyl ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electrochemical Impedance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Good Time ◽  
Glass Substrates ◽  
Current Voltage ◽  
One Step

Planar perovskite solar cells were fabricated on F-doped SnO2 (FTO) coated glass substrates, with 4,4’-((1E,1’E)-((1,2,4-thiadiazole-3,5-diyl)bis(azaneylylidene))bis(methaneylylidene))bis(N,N-di-p-tolylaniline) (bTAThDaz) as hole transport material. This imine was synthesized in one step reaction, starting from commercially available and relatively inexpensive reagents. Electrochemical, optical, electrical, thermal and structural studies including thermal images and current-voltage measurements of the full solar cell devices characterize the imine in details. HOMO-LUMO of bTAThDaz were investigated by cyclic voltammetry (CV) and energy-resolved electrochemical impedance spectroscopy (ER-EIS) and were found at −5.19 eV and −2.52 eV (CV) and at −5.5 eV and −2.3 eV (ER-EIS). The imine exhibited 5% weight loss at 156 °C. The electrical behavior and photovoltaic performance of the perovskite solar cell was examined for FTO/TiO2/perovskite/bTAThDaz/Ag device architecture. Constructed devices exhibited good time and air stability together with quite small effect of hysteresis. The observed solar conversion efficiency was 14.4%.

Functionalized aluminum-catalyzed silicon nanowire formation and radial junction photovoltaic devices

Nanoscale ◽  
2021 ◽  
Author(s):  
Wipakorn Jevasuwan ◽  
Naoki Fukata
Keyword(s):  
Surface Modification ◽  
Solar Cells ◽  
Surface Defects ◽  
Silicon Nanowire ◽  
Photovoltaic Devices ◽  
Step Process ◽  
One Step ◽  
Length Reduction

Vertical Al-catalyzed SiNW arrays with shaped surfaces were synthesized by a one-step process and NW-based solar cells were demonstrated with optimized NW surface defects through surface modification and length reduction.

Numerical Simulation of Single Junction InGaN Solar Cell by SCAPS

2019 ◽  
Vol 821 ◽  
pp. 407-413 ◽  
Author(s):  
Mohamed Orabi Moustafa ◽  
Tariq Alzoubi
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Collection Efficiency ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Surface Recombination ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Bandgap Energy ◽  
Single Junction

The performance of the InGaN single-junction thin film solar cells has been analyzed numerically employing the Solar Cell Capacitance Simulator (SCAPS-1D). The electrical properties and the photovoltaic performance of the InGaN solar cells were studied by changing the doping concentrations and the bandgap energy along with each layer, i.e. n-and p-InGaN layers. The results reveal an optimum efficiency of the InGaN solar cell of ~ 15.32 % at a band gap value of 1.32 eV. It has been observed that lowering the doping concentration NA leads to an improvement of the short circuit current density (Jsc) (34 mA/cm2 at NA of 1016 cm−3). This might be attributed to the increase of the carrier mobility and hence an enhancement in the minority carrier diffusion length leading to a better collection efficiency. Additionally, the results show that increasing the front layer thickness of the InGaN leads to an increase in the Jsc and to the conversion efficiency (η). This has been referred to the increase in the photogenerated current, as well as to the less surface recombination rate.

Sb2S3 solar cells: functional layer preparation and device performance

2019 ◽  
Vol 6 (12) ◽  
pp. 3381-3397 ◽  
Author(s):  
Qian Wang ◽  
Zhu Chen ◽  
Jianyue Wang ◽  
Yinyan Xu ◽  
Yaping Wei ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Photovoltaic Performance ◽  
Device Performance ◽  
Functional Layer

This review focuses on Sb2S3 solar cell functional layers, including their preparation methodologies, morphologies, structures, and photovoltaic performance.

The Chemistry and Characteristics of Nitric Acid-Graphite Intercalation

1982 ◽  
Vol 20 ◽  
Author(s):  
Sophia R. Su ◽  
Daniel W. Oblas
Keyword(s):  
Mass Spectrometry ◽  
Nitric Acid ◽  
Gas Phase ◽  
Contributory Factor ◽  
Fourth Stage ◽  
Acid Vapor ◽  
Step Process ◽  
Second Stage ◽  
Graphite Intercalation ◽  
One Step

ABSTRACTGas-phase intercalation of graphite by nitric acid is a one-step process. The weight uptake of the sample is a function of nitric acid vapor pressure. A pure second stage compound was formed when the HNO3 reservoir was maintained at 17°C. Only a fourth stage compound was formed when the acid was kept at 0°C. The product gases due to intercalation and gas species evolved during deintercalation were analyzed by mass spectrometry. NO2 and H2O were the major components detected from the intercalation product gases. A small amount of oxygen was also present. The existence of O2 is probably due to the photo-chemical decomposition of nitric acid. As such, the photodecomposition of nitric acid is not a contributory factor in the intercalation chemistry.

Electro-Optical Simulation Of In Ultra-Thin Photonic Crystal Amorphous Silicon Solar Cells

2019 ◽  
Vol 5 (2) ◽  
pp. 10-21
Author(s):  
Abdelhak Merabti ◽  
Abdelkader Bensliman ◽  
Mahmoud Habab
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Photonic Crystal ◽  
Electric Field ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Cell Structure ◽  
Photovoltaic Performance ◽  
Optical Simulation ◽  
Geometrical Parameters

Hydrogenated amorphous Si (a-Si:H) is an important solar cell material. The critical problem in the a-Si:H-based photovoltaic cell is increasing the conversion efficiency. To overcome the difficulty,  higher conversion efficiency demands a longer optical path  to increase optical absorption. Thus, a light trapping  structure is needed to obtain more efficient absorption. In this context, we propose a complete solar cell structure for which a 1D grating is etched into the ultrathin active absorbing layer of a one-dimensional "CP 1D" photonic crystal a-Si: H characterized by the optimal parameters: period a = 480 nm, a filling factor ff = 50% and a depth d = 150 nm. This was selected by varying the CP1D parameters to maximize the absorption integrated into the active layer. CP1D is suggested as an intermediate layer in the solar cell concentration system. This study allowed us to model the optical and electrical behavior of a CP1D solar cell. After optimization of the geometrical parameters (period and fill factor ... etc.), we concluded that the CP1D led to greater optical gains than for their unstructured equivalent. The simulation clearly illustrates that the electric field strongly affects the electro-optical characteristics of the devices studied, and that it is clear that 1D PC solar cells as active layer have exhibited a high electric field distribution. We have focused on the net on the effect of the active layer and its beneficial role in the sense of expressing the photovoltaic performance of the devices.

Remarkable enhancement of photovoltaic performance of ZnO/CdTe core–shell nanorod array solar cells through interface passivation with a TiO2 layer

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 71883-71889 ◽  
Author(s):  
Guanghui Zhang ◽  
Yukun Wu ◽  
Huaiyi Ding ◽  
Yunsong Zhu ◽  
Junwen Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Nanorod Array ◽  
Core Shell ◽  
Tio2 Layer ◽  
Interface Passivation ◽  
Cdte Core

The power conversion efficiency of the ZnO/CdTe core–shell nanorod array solar cell can be dramatically improved with a thin passivation TiO2 layer on the interface.

PEDOT:PSS assisted preparation of a graphene/nickel cobalt oxide hybrid counter electrode to serve in efficient dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 100159-100168 ◽  
Author(s):  
Gentian Yue ◽  
Guang Yang ◽  
Fumin Li ◽  
Jihuai Wu
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Counter Electrode ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Nickel Cobalt ◽  
Nickel Cobalt Oxide ◽  
Sensitized Solar Cells

A much higher photovoltaic performance of a dye-sensitized solar cell with a (P-A) Gr/NiCo2O4 counter electrode is achieved than that of a Pt configuration device.

scholarly journals High open-circuit voltage small-molecule p-DTS(FBTTh2)2:ICBA bulk heterojunction solar cells – morphology, excited-state dynamics, and photovoltaic performance

2015 ◽  
Vol 3 (4) ◽  
pp. 1530-1539 ◽  
Author(s):  
Aung Ko Ko Kyaw ◽  
Dominik Gehrig ◽  
Jie Zhang ◽  
Ye Huang ◽  
Guillermo C. Bazan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Excited State ◽  
Solar Cell ◽  
Small Molecule ◽  
Open Circuit Voltage ◽  
Bulk Heterojunction ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cell

A high VOC of 1V is achieved in the bulk heterojunction solar cell using the solution-processed small molecule donor p-DTS(FBTTh2)2 and indene-C60 bis-adduct acceptor.

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