Disassembly of micelles to impart donor and acceptor gradation to enhance organic solar cell efficiency

We have fabricated organic solar cell of a new low bandgap polymer poly[4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b′]dithiophene-2,6-diyl-alt-4,7-bis(2-thienyl)-2,1,3-benzothiadiazole-5′,5′′-diyl] (PCPDTTBTT). We have investigated for the first time the stability tests, ISOS-L-1 and ISOS-D-3, of PCPDTTBTT solar cells. Thermal annealing of PCPDTTBTT solar cells at 80°C brought about an improvement of photocurrent generation, stability, and efficiency of the solar cells. T80 value of PCPDTTBTT solar cell is about 150 hours which is close to P3HT (235 h). PCPDTTBTT is very promising polymer for both polymer solar cell efficiency and stability.

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A direct arylation approach towards efficient small molecule organic solar cells

Journal of Materials Chemistry A ◽

10.1039/c5ta09023g ◽

2016 ◽

Vol 4 (3) ◽

pp. 791-795 ◽

Cited By ~ 16

Author(s):

Julija Kudrjasova ◽

Jurgen Kesters ◽

Pieter Verstappen ◽

Jeroen Brebels ◽

Tim Vangerven ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Semiconductors ◽

Small Molecule ◽

Organic Solar Cells ◽

Direct Arylation ◽

Solar Cell Efficiency ◽

Cell Efficiency

Direct arylation affords organic semiconductors enabling high solar cell efficiency upon careful removal of the ‘miss-coupled’ side products.

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Boron-Nitrogen Doped Dihydroindeno[1,2-b]fluorene Derivatives as Acceptors in Organic Solar Cells

10.26434/chemrxiv.8345516 ◽

2019 ◽

Author(s):

Matthew Morgan ◽

Maryam Nazari ◽

Thomas Pickl ◽

J. Mikko Rautiainen ◽

Heikki M. Tuononen ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Broad Absorption ◽

Nitrogen Doped ◽

Large Depth ◽

End Products ◽

Boron Nitrogen ◽

The Way

The electrophilic borylation of 2,5-diarylpyrazines results in the formation of boron-nitrogen doped dihydroindeno[1,2-<i>b</i>]fluorene which can be synthesized via mildly air-sensitive techniques and the end products handled readily under atmosphereic conditions. Through transmetallation via diarylzinc reagents a series of derivatives were sythesized which show broad absorption profiles that highlight the versatility of this backbone to be used in organic solar cell devices. These compounds can be synthesized in large yields, in alow number of steps and functionalized at many stages along the way providing a large depth of possibilities. Exploratory device paramaters were studied and show PCE of 2%.

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Additive-induced Miscibility Regulation and Hierarchical Morphology Enables 17.5% Binary Organic Solar Cells

Energy & Environmental Science ◽

10.1039/d0ee04012f ◽

2021 ◽

Author(s):

Jie Lv ◽

Hua Tang ◽

Jiaming Huang ◽

Cenqi Yan ◽

Kuan Liu ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Power Conversion ◽

Charge Trapping ◽

Free Charge ◽

Charge Generation ◽

Low Charge ◽

Hierarchical Morphology

Due to the barrierless free charge generation, low charge trapping, and high charge mobilities, the PM6:Y6 organic solar cell (OSC) achieves excellent power conversion efficiency (PCE) of 15.7%. However, the...

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CdTe-Based Thin Film Solar Cells: Past, Present and Future

Energies ◽

10.3390/en14061684 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1684

Author(s):

Alessandro Romeo ◽

Elisa Artegiani

Keyword(s):

Thin Film ◽

Solar Cells ◽

Solar Cell ◽

Short Circuit ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Open Circuit ◽

Early Years ◽

Solar Cell Efficiency ◽

Cell Efficiency

CdTe is a very robust and chemically stable material and for this reason its related solar cell thin film photovoltaic technology is now the only thin film technology in the first 10 top producers in the world. CdTe has an optimum band gap for the Schockley-Queisser limit and could deliver very high efficiencies as single junction device of more than 32%, with an open circuit voltage of 1 V and a short circuit current density exceeding 30 mA/cm2. CdTe solar cells were introduced at the beginning of the 70s and they have been studied and implemented particularly in the last 30 years. The strong improvement in efficiency in the last 5 years was obtained by a new redesign of the CdTe solar cell device reaching a single solar cell efficiency of 22.1% and a module efficiency of 19%. In this paper we describe the fabrication process following the history of the solar cell as it was developed in the early years up to the latest development and changes. Moreover the paper also presents future possible alternative absorbers and discusses the only apparently controversial environmental impacts of this fantastic technology.

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Fabrication and characterization of CuPc and PCBM based organic solar cell with metal interlayer

World Journal of Engineering ◽

10.1260/1708-5284.12.5.413 ◽

2015 ◽

Vol 12 (5) ◽

pp. 413-420

Author(s):

Muhammad Ahsan Naveed ◽

A. Hussain ◽

K. Islam ◽

P. Akhter

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Impedance Spectroscopy ◽

Organic Solar Cells ◽

Organic Solar Cell ◽

Silver Layer ◽

Absorbance Spectrum ◽

Heterojunction Solar Cells ◽

Processing Cost ◽

Donor Acceptor

Organic solar cells have potential as an alternative to conventional inorganic solar cell due to low processing cost, flexibility and easy fabrication technique. The goal of this paper is to study the characteristics of the CuPc and PCBM based organic solar cell by introducing a thin layer of Ag at the interface of donor (CuPc) and Acceptor (PCBM), their photovoltaic and optical properties were investigated. The heterojunction solar cells with and without silver inter layer were fabricated through thermal deposition in HR vacuum. The OPV solar cells were characterized using current-voltage graphs, absorbance spectrum and Impedance spectroscopy. Impedance spectroscopy was taken to identify the traps using series resistance, parallel resistance, and Impedance spectrums under different frequencies. Optical behaviors of these devices have been investigated with absorbance spectrum. Introducing Ag to interfacing point produced traps and these traps causes to decreased Voc, Isc, FF, and efficiency. The effect of silver layer at donor acceptor interface was studied.

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Effective oxygen plasma treatment on indium tin oxide electrode to improve organic solar cell efficiency

physica status solidi (a) ◽

10.1002/pssa.201127602 ◽

2011 ◽

Vol 209 (2) ◽

pp. 369-372 ◽

Cited By ~ 8

Author(s):

Fu-Ching Tang ◽

Jay Chang ◽

Wei-Yang Chou ◽

Horng-Long Cheng ◽

Steve Lien-Chung Hsu ◽

...

Keyword(s):

Solar Cell ◽

Tin Oxide ◽

Indium Tin Oxide ◽

Organic Solar Cell ◽

Oxygen Plasma ◽

Oxygen Plasma Treatment ◽

Oxide Electrode ◽

Indium Tin Oxide Electrode ◽

Solar Cell Efficiency ◽

Cell Efficiency

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Stability of inverted organic solar cells with ZnO contact layers deposited from precursor solutions

Energy & Environmental Science ◽

10.1039/c4ee02488e ◽

2015 ◽

Vol 8 (2) ◽

pp. 592-601 ◽

Cited By ~ 70

Author(s):

Bradley A. MacLeod ◽

Bertrand J. Tremolet de Villers ◽

Philip Schulz ◽

Paul F. Ndione ◽

Hyungchul Kim ◽

...

Keyword(s):

Solar Cells ◽

Solar Cell ◽

Phosphonic Acid ◽

Organic Solar Cells ◽

Zinc Acetate ◽

Organic Solar Cell ◽

Solution Processed ◽

Interstitial Zinc ◽

Cell Stability

Interstitial zinc defects in solution-processed ZnO can be mitigated by using a diethylzinc precursor instead of zinc acetate, or by modifying the ZnO surface with a phosphonic acid, resulting in improved organic solar cell stability.

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Junction Configuration Effects on the Photovoltaic Parameters of a-Si/CZTS Solar Cells

10.20944/preprints202201.0163.v1 ◽

2022 ◽

Author(s):

H. Bitam ◽

B. Hadjoudja ◽

Beddiaf Zaidi ◽

C. Shakher ◽

S. Gagui ◽

...

Keyword(s):

Renewable Energy ◽

Solar Cells ◽

Solar Cell ◽

Open Circuit Voltage ◽

Open Circuit ◽

Photovoltaic Devices ◽

Solar Cell Efficiency ◽

Cell Efficiency ◽

Reported Study ◽

Stated Problem

Due to increased energy intensive human activities resulting accelerated demand for electric power coupled with occurrence of natural disasters with increased frequency, intensity, and duration, it becomes essential to explore and advance renewable energy technology for sustainability of the society. Addressing the stated problem and providing a radical solution has been attempted in this study. To harvest the renewable energy, among variety of solar cells reported, a composite a-Si/CZTS photovoltaic devices has not yet been investigated. The calculated parameters for solar cell based on the new array of layers consisting of a-Si/CZTS are reported in this study. The variation of i) solar cell efficiency as a function of CZTS layer thickness, temperature, acceptor, and donor defect concentration; ii) variation of the open circuit current density as a function of temperature, open circuit voltage; iii) variation of open circuit voltage as a function of the thickness of the CZTS layer has been determined. There has been no reported study on a-Si/CZTS configuration-based solar cell, analysis of the parameters, and study to address the challenges imped efficiency of the photovoltaic device and the same has been discussed in this work. The value of the SnO2/a-Si/CZTS solar cells obtained from the simulation is 23.9 %.

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