Polarizing Organic Photovoltaics

Zhu, Rui; Kumar, Ankit; Yang, Yang

doi:10.1002/adma.201101514

Cited by 118 publications

(125 citation statements)

References 34 publications

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“…These unique properties of PSCs opened a new gateway for new applications in the formation of stretchable solar devices including textiles and fabrics [39]. A modern recycling concept known as polarizing organic photovoltaics (ZOPVs) was also developed for increasing the function of liquid crystal displays utilizing the same polarizer, a photovoltaic device and proper light conditions/solar panel [39]- [41].…”

Section: Nano Crystal Based Solar Cellsmentioning

confidence: 99%

Solar Cells: In Research and Applications—A Review

Sharma¹,

Jain²,

Sharma³

2015

MSA

279

168

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The light from the Sun is a non-vanishing renewable source of energy which is free from environmental pollution and noise. It can easily compensate the energy drawn from the non-renewable sources of energy such as fossil fuels and petroleum deposits inside the earth. The fabrication of solar cells has passed through a large number of improvement steps from one generation to another. Silicon based solar cells were the first generation solar cells grown on Si wafers, mainly single crystals. Further development to thin films, dye sensitized solar cells and organic solar cells enhanced the cell efficiency. The development is basically hindered by the cost and efficiency. In order to choose the right solar cell for a specific geographic location, we are required to understand fundamental mechanisms and functions of several solar technologies that are widely studied. In this article, we have reviewed a progressive development in the solar cell research from one generation to other, and discussed about their future trends and aspects. The article also tries to emphasize the various practices and methods to promote the benefits of solar energy.

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Section: Nano Crystal Based Solar Cellsmentioning

confidence: 99%

Solar Cells: In Research and Applications—A Review

Sharma¹,

Jain²,

Sharma³

2015

MSA

279

168

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“…124 Another new use for SqP is as a means to control donor/acceptor vertical phase separation in BHJ films. Several groups have shown that a charge extraction misbalance due to an improper active layer/electrode interface can cause a reduction in the device fill factor, giving an S-shaped current− voltage curve.…”

Section: +mentioning

confidence: 99%

Panoramic View of Electrochemical Pseudocapacitor and Organic Solar Cell Research in Molecularly Engineered Energy Materials (MEEM)

et al. 2014

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Our program on capacitive energy storage is a comprehensive one that combines experimental and computational components to achieve a fundamental understanding of charge storage processes in redox-based materials, specifically transition metal oxides. Some of the highlights of this program are the identification of intercalation pseudocapacitance in Nb 2 O 5 , which enables high energy density to be achieved at high rates, and the development of a new route for synthesizing mesoporous films in which preformed nanocrystal building blocks are used in combination with polymer templating. The resulting material architectures have large surface areas and enable electrolyte access to the redox active pore walls, while the interconnected mesoporous film provides good electronic conductivity. Select first-principles density-functional theory studies of prototypical pseudocapacitor materials are reviewed, providing insight into the key physical and chemical features involved in charge transfer and ion diffusion. Rigorous multiscale physical models and numerical tools have been developed and used to reproduce electrochemical properties of carbon-based electrochemical capacitors with the ultimate objective of facilitating the optimization of electrode design. For the organic photovoltaic (OPV) program, our focus has been ongoing beyond the trial-and-error Edisonian approaches that have been responsible for the increase in power conversion efficiency of blend-cast (BC) bulk heterojunction blends of polymers and fullerenes. Our first approach has been to use molecular self-assembly to create the ideal nanometer-scale architecture using thermodynamics rather than relying on the kinetics of spontaneous phase segregation. We have created fullerenes that self-assemble into one-dimensional stacks and have shown that use of these self-assembled fullerenes lead to dramatically enhanced OPV performance relative to fullerenes that do not assemble. We also have created self-assembling conjugated polymers that form gels based on electrically continuous cross-linked micelles in solution, opening the possibility for water-processable "green" production of OPVs based on these materials. Our second approach has been to avoid kinetic control over phase separation by using a sequential processing (SqP) technique to deposit the polymer and fullerene materials in separate deposition steps. The polymer layer is deposited first, using solvents and deposition conditions that optimize the polymer crystallinity for swelling and hole mobility. The fullerene layer is then deposited in a second step from a solvent that swells the polymer but does not dissolve it, allowing the fullerene to penetrate into the polymer underlayer to the desired degree. Careful comparison of composition-and thickness-matched BC and SqP devices shows that SqP not only produces more efficient devices but also leads to devices that behave more consistently.

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“…Since Tang published the first organic heterojunction solar cell in 1986, the energy harvesting efficiency of OPVs have greatly increased due to optimized electronic device structures and incorporating novel absorber materials [1][2][3][4]. Besides the pursuit of high power efficiency, OPVs have also been investigated for various potential applications [5,6]. Transparent OPVs, i.e., devices that seem transparent to the human eye due to high transmissivity between 400 nm -700 nm, can be integrated into window panes or screens of consumer electronic devices [7].…”

Section: Introductionmentioning

confidence: 99%

ITO-Free Transparent Organic Solar Cell with Distributed Bragg Reflector for Solar Harvesting Windows

Peng¹,

Zhang²,

Cheng³

et al. 2017

Preprint

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Abstract:We demonstrated an ITO-free, highly transparent organic solar cell with the potential to be integrated into window panes for energy harvesting purposes. A transparent, conductive ZnO/Ag/ZnO multilayer electrode and a Ag:Ca thin film electrode were used in this transparent device as the bottom and top electrode, respectively. To further improve the transmittance of the solar cell, the thickness of the top ZnO layer was investigated by both experiment and simulation. An average visible transmittance of > 60% was reached, with a maximum transmittance of 73% at 556 nm. Both top and bottom illumination of the solar cell generated comparable power conversion efficiencies, which indicates the wide application of this solar cell structure. In addition, we fabricated distributed Bragg reflector mirrors with sputtered SiO2 and TiO2, which efficiently increased the power conversion efficiency over 20% for the solar cells on glass and PET substrates.

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Polarizing Organic Photovoltaics

Abstract: Polarizing organic photovoltaic (ZOPV) technology is demonstrated as a novel concept for energy harvesting and recycling technology. Novel, inverted quasi‐bilayer device architecture is utilized to realize the ZOPV device. An anisotropic photovoltaic effect is obtained.

Cited by 118 publications

References 34 publications

Solar Cells: In Research and Applications—A Review

Solar Cells: In Research and Applications—A Review

Panoramic View of Electrochemical Pseudocapacitor and Organic Solar Cell Research in Molecularly Engineered Energy Materials (MEEM)

ITO-Free Transparent Organic Solar Cell with Distributed Bragg Reflector for Solar Harvesting Windows

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