Hybrid Solar Cells with Outstanding Short-Circuit Currents Based on a Room Temperature Soft-Chemical Strategy: The Case of P3HT:Ag2S

2012 ◽  
Vol 134 (42) ◽  
pp. 17392-17395 ◽  
Author(s):  
Yan Lei ◽  
Huimin Jia ◽  
Weiwei He ◽  
Yange Zhang ◽  
Liwei Mi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Room Temperature ◽  
Short Circuit ◽  
Hybrid Solar Cells ◽  
Chemical Strategy ◽  
Short Circuit Currents

Controlled in situ fabrication of Ag2O/AgO thin films by a dry chemical route at room temperature for hybrid solar cells

2014 ◽  
Vol 43 (29) ◽  
pp. 11333-11338 ◽  
Author(s):  
Jie Wei ◽  
Yan Lei ◽  
Huimin Jia ◽  
Jiamei Cheng ◽  
Hongwei Hou ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Solar Cell ◽  
Room Temperature ◽  
Hybrid Solar Cells ◽  
Photovoltaic Devices ◽  
Chemical Route ◽  
In Situ Fabrication

Silver oxides (Ag2O and AgO) have attracted increasing attention as potential solar cell materials for photovoltaic devices due to their ideal bandgap and non-toxicity.

scholarly journals The Effect of Structural Properties of Cu2Se/Polyvinylcarbazole Nanocomposites on the Performance of Hybrid Solar Cells

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
S. Govindraju ◽  
N. Ntholeng ◽  
K. Ranganathan ◽  
M. J. Moloto ◽  
L. M. Sikhwivhilu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Nanocomposites ◽  
Bulk Heterojunction ◽  
Short Circuit ◽  
Semiconductor Nanocrystals ◽  
Polymer Nanocomposite ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Colloidal Synthesis ◽  
Hybrid Solar Cells

It has been said that substitution of fullerenes with semiconductor nanocrystals in bulk heterojunction solar cells can potentially increase the power conversion efficiencies (PCE) of these devices far beyond the 10% mark. However new semiconductor nanocrystals other than the potentially toxic CdSe and PbS are necessary. Herein we report on the synthesis of Cu2Se nanocrystals and their incorporation into polyvinylcarbazole (PVK) to form polymer nanocomposites for use as active layers in hybrid solar cells. Nearly monodispersed 4 nm Cu2Se nanocrystals were synthesized using the conventional colloidal synthesis. Varying weight % of these nanocrystals was added to PVK to form polymer nanocomposites. The 10% polymer nanocomposite showed retention of the properties of the pure polymer whilst the 50% resulted in a complete breakdown of the polymeric structure as evident from the FTIR, TGA, and SEM. The lack of transport channels in the 50% polymer nanocomposite solar cell resulted in a device with no photoresponse whilst the 10% polymer nanocomposite resulted in a device with an open circuit voltage of 0.50 V, a short circuit current of 7.34 mA/cm2, and a fill factor of 22.28% resulting in a PCE of 1.02%.

Prominent Short-Circuit Currents of Fluorinated Quinoxaline-Based Copolymer Solar Cells with a Power Conversion Efficiency of 8.0%

2012 ◽  
Vol 24 (24) ◽  
pp. 4766-4772 ◽  
Author(s):  
Hsieh-Chih Chen ◽  
Ying-Hsiao Chen ◽  
Chi-Chang Liu ◽  
Yun-Chen Chien ◽  
Shang-Wei Chou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Short Circuit ◽  
Power Conversion ◽  
Short Circuit Currents

Fabrication and Characterization of Hybrid Nano-Polymer Solar Cells

2011 ◽  
Author(s):  
Rohit Kelkar ◽  
Satwik Timmavajjala ◽  
Kunal Mitra ◽  
Clayton Baum
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Indium Tin Oxide ◽  
Polymer Solar Cells ◽  
Short Circuit ◽  
Interfacial Area ◽  
Hybrid Solar Cells ◽  
Inorganic Substances ◽  
Glass Slides ◽  
The Individual

Hybrid solar cells consist of organic as well as inorganic substances. An organic compound absorbs light and transports holes whereas an inorganic compound is an acceptor and transports electrons. Hybrid solar cells were fabricated on glass slides pre-coated with indium tin oxide (ITO) which itself acts as a cathode. Poly(3,4 ethylenedioxythiophene)polystyrenesulfonate (PEDOT:PSS) was coated in order to avoid a short circuit between the layers and also to smooth the surface of ITO. A photoactive layer which consisted of poly(3-hexathiophene) (P3HT), TiO2 and star dispersant was coated over the PEDOT:PSS layer. Gold/molybdenum was sputtered as an anode material. Star dispersant was added to the active layer in order to improve the performance of the solar cell. Introduction of star dispersant increases the interfacial area and in turn the exciton dissociation. Atomic force microscopy (AFM) was used to measure the thicknesses of the individual layers and also to obtain a topographical view of the cell surface to ensure the uniformity of the deposited layers. Absorption and photoluminescence spectra were measured to characterize the solar cell. Finally, current–voltage characteristics were measured to ensure that the solar cell acts as a diode.

scholarly journals Electric Field Distribution in Hybrid Solar Cells Comprising an Organic Donor Polymer and Amorphous Silicon

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
S. Schaefer ◽  
S. Albrecht ◽  
D. Neher ◽  
T. F. Schulze ◽  
E. Conrad ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Amorphous Silicon ◽  
Field Distribution ◽  
Organic Material ◽  
Electric Field Distribution ◽  
Layer Structure ◽  
Short Circuit ◽  
Silicon Layer ◽  
Hybrid Solar Cells

AbstractWe present a study on the performance and analysis of hybrid solar cells comprising a planar heterojunction between between a conjugated donor polymer, P3HT or PCPDTBT, and hydrogenated amorphous silicon (a-Si:H). A comparison of the modeled absorption spectra of the layer stack with the measured external quantum efficiency is used to investigate the contribution of the inorganic and organic material to the photocurrent generation in the device. Although both materials contribute to the photocurrent, the devices exhibit poor quantum efficiencies and low short circuit currents. Bandstructure simulations of the hybrid layer structure reveal that an unfavorable electric field distribution within the planar multilayer structure limits the performance. Using electroabsorption measurements we can show that the electric field is extremelyweak in the amorphous silicon but strong in the organic material. The situation changes drasticallywhen the conjugated polymer is p-doped. Doping not only increases the conductivity of the organic material, but also restores the electric field in the amorphous silicon layer. Optimized hybrid solar cells comprising thin doped P3HT layers exhibit energy conversion efficiencies (ECE) up to 2.8 %.

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