scholarly journals Photovoltaic properties and morphology of organic solar cells based on liquid-crystal semiconducting polymer with additive

2014 ◽  
Author(s):  
Atsushi Suzuki ◽  
Masahito Zushi ◽  
Hisato Suzuki ◽  
Shinichi Ogahara ◽  
Tsuyoshi Akiyama ◽  
...  
Keyword(s):  
Solar Cells ◽  
Liquid Crystal ◽  
Organic Solar Cells ◽  
Photovoltaic Properties ◽  
Semiconducting Polymer

14.7% all-small-molecule organic solar cells enabled with fullerene derivative incorporation

2021 ◽  
Author(s):  
Hu Dingqin ◽  
Hua Tang ◽  
Haiyan Chen ◽  
Jie Lv ◽  
Shirong Lu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Fullerene Derivative ◽  
Photovoltaic Properties

Ternary strategy is promising to enhance the photovoltaic properties of organic solar cells (OSCs). Nevertheless, it is full of challenging when this approach involving only small molecule. Herein, a fullerene...

Synthesis and photovoltaic properties of A–D–A type non-fullerene acceptors containing isoindigo terminal units

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107566-107574 ◽  
Author(s):  
Xin Liu ◽  
Yuan Xie ◽  
Xinyi Cai ◽  
Yunchuan Li ◽  
Hongbin Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Organic Molecules ◽  
Photovoltaic Properties ◽  
Donor Acceptor ◽  
Solution Processable ◽  
Terminal Units

Four solution-processable acceptor–donor–acceptor structured organic molecules with isoindigo as terminal acceptor units and different aromatic rigid planar cores as donor units were designed and synthesized as the acceptor materials in organic solar cells (OSCs).

Effect of temperature on organic Schottky barrier cells

1981 ◽  
Vol 59 (6) ◽  
pp. 727-732 ◽  
Author(s):  
Rafik O. Loutfy ◽  
Cheng-Kuo Hsiao
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Schottky Barrier ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Power Conversion ◽  
Open Circuit ◽  
Effect Of Temperature ◽  
Photovoltaic Properties

The effect of temperature on the photovoltaic properties of indium/metal-free phthalocyanine Schottky barrier solar cells was investigated in the range 260–350 K. In general, the short circuit photocurrent, Jsc, and fill factor, ff, increased with increasing temperature (in contrast to inorganic photocells). The device series resistance and open circuit photovoltage, Voc, decreased (similar to inorganic photocells) as temperature was raised. An increase in the overall power conversion efficiency, η, has been observed with increase of temperature. In the case of x-H2Pc, the power conversion efficiency increased by 2.5 times due to a temperature rise of 60 °C above ambient. Thus, for operation at temperatures above ambient, organic solar cells may offer a significant advantage over inorganic cells.Analysis of the variation of the photovoltage with temperature showed that the decrease in Voc is mainly due to variation injunction impedance, which is controlled by thermionic current at high temperature and ionized impurity at low temperature.

Molecular Multilayer Organic Solar Cells with Large Excitonic Diffusion Length

2006 ◽  
Vol 965 ◽  
Author(s):  
Seunghyup Yoo ◽  
William J Potscavage ◽  
Benoit Domercq ◽  
Sung-Ho Han ◽  
Dean Levi ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Performance Improvement ◽  
Organic Solar Cells ◽  
Diffusion Length ◽  
Collection Efficiency ◽  
Blocking Layer ◽  
Photovoltaic Properties ◽  
Optical Functions ◽  
Carrier Collection

ABSTRACTWe report on the photovoltaic properties of organic solar cells based on pentacene and C60 thin films. A peak external quantum efficiency (EQE) of 69 % at a wavelength of λ = 668 nm is achieved upon optimization of the exciton blocking layer (EBL) thickness. Complex optical functions of pentacene films are measured as a function of wavelength by spectroscopic ellipsometry and used to analyze the EQE spectra. Detailed analysis of the EQE spectra indicate that the pentacene layers exhibit large excitonic diffusion lengths of ∼70 nm and that the performance improvement in EQE can be attributed to the influence of the thickness of the EBL layer on the carrier collection efficiency.

Thienoquinolinone as a new building block for wide bandgap semiconducting polymer donors for organic solar cells

2020 ◽  
Vol 8 (35) ◽  
pp. 12265-12271
Author(s):  
Jong-Woon Ha ◽  
Hee Su Kim ◽  
Chang Eun Song ◽  
Hea Jung Park ◽  
Do-Hoon Hwang
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Building Block ◽  
Wide Bandgap ◽  
Semiconducting Polymer ◽  
Aromatic Structure ◽  
Donor Acceptor

A new heterocyclic aromatic structure, thieno[3,2-c]quinolin-4(5H)-one (TQO), was designed and synthesized as an electron-accepting building block for donor–acceptor-type copolymers.

scholarly journals 3D Charge Transport Pathway in Organic Solar Cells via Incorporation of Discotic Liquid Crystal Columns

Solar RRL ◽  
2020 ◽  
Vol 4 (5) ◽  
pp. 2070056
Author(s):  
Tong Wang ◽  
Meng-Si Niu ◽  
Jia-Jia Guo ◽  
Kang-Ning Zhang ◽  
Zhen-Chuan Wen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Liquid Crystal ◽  
Charge Transport ◽  
Organic Solar Cells ◽  
Transport Pathway ◽  
Discotic Liquid Crystal

DFT Study of New Donor-π-Acceptor Materials Based on Thieno[2,3-b] Indole Candidate for Organic Solar Cells Application

2020 ◽  
Vol 1002 ◽  
pp. 221-229
Author(s):  
Faeq A. Al-Temimei ◽  
Lubna A. Alasadi ◽  
Azhar S. Alaboodi
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Electronic Structures ◽  
Oxidation Process ◽  
Energy Gap ◽  
Energy Levels ◽  
Photovoltaic Properties ◽  
Photo Oxidation ◽  
Td Dft ◽  
Homo And Lumo

In present search, we report theoretical analysis by using DFT (TD-DFT)-B3LYP with 6-31G (d, p) level on the geometries, optoelectronic and absorption characteristics of novel a series of the donor-π-acceptor dyes. Their π-conjugated bridge is based on the thiophene, benzene, pyridine, and pyrazine, the thieno [2,3-b] indole was used as an electron donor (D) and the acid 2-cyanoacrylic was used as an electron acceptor (A) group. The theoretical information of the electronic structures such as energy levels (HOMO and LUMO) and energy gap of the molecules is based on study the dyes in organic solar cells. Consequently the energy levels, energy gap, photovoltaic properties, quantum chemical and absorption parameters of all the dyes have been computed and reported. The calculations show that the dyes under study can theoretically be good photosensitizers in DSSCs. Also, the results show that the LUMO levels of all dyes design lie over the conduction band (Ecb) of the semiconductors TiO2 (or PC70BM) likewise the HOMO levels lie under the decrease potential vitality of the (electrolytes) comparing to ability of electron transfer from the molecular dye excited state to TiO2 (or PC70BM) and chargeerenewal after photo-oxidation process, separately.

Designing Triphenylamine‐Configured Donor Materials with Promising Photovoltaic Properties for Highly Efficient Organic Solar Cells

2020 ◽  
Vol 5 (25) ◽  
pp. 7358-7369 ◽  
Author(s):  
Muhammad Bilal Ahmed Siddique ◽  
Riaz Hussain ◽  
Sabir Ali Siddique ◽  
Muhammad Yasir Mehboob ◽  
Zobia Irshad ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Properties ◽  
Highly Efficient
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