Simultaneous Enhancement of Open‐Circuit Voltage, Short‐Circuit Current Density, and Fill Factor in Polymer Solar Cells

He, Zhicai; Zhong, Chengmei; Huang, Xun; Wong, Wai Yeung; Wu, Hongbin; Chen, Liwei; Su, Shi‐Jian; Cao, Yong

doi:10.1002/adma.201103006

Cited by 2,072 publications

(1,619 citation statements)

References 44 publications

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“…27 Molecules, unlike inorganic wide bandgap semiconductors, possess a plurality of structural parameters that can be tuned in these systems: the length of the molecule, the conjugated or aliphatic character and the end-functional groups that serve to strongly bind on a given surface and passivate electronic defect states. [27][28][29][30][31][32][33][34][35] Not to exclude also their solution processability which is a significantly lower cost manufacturing process compared to atomic layer deposition.…”

Section: Introductionmentioning

confidence: 99%

Molecular interfaces for plasmonic hot electron photovoltaics

2015

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Section: Introductionmentioning

confidence: 99%

Molecular interfaces for plasmonic hot electron photovoltaics

2015

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“…4,[8][9][10][11][12] A maximum efficiency of 8.3% was obtained for a single active layer BHJ device. 13 Three different types of morphologies have been used in the active layer of OPVs, including bilayers, BHJs and ordered BHJs, which are schematized in Figure 1. 3 Polymer based bilayer devices were first fabricated by Sariciftci et al by evaporating a thin layer of C 60 on top of spin-coated poly [2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) layer.…”

Section: Introductionmentioning

confidence: 99%

On the morphology of polymer‐based photovoltaics

Liu

Jung

et al. 2012

J Polym Sci B Polym Phys

308

248

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We review the morphologies of polymer-based solar cells and the parameters that govern the evolution of the morphologies and describe different approaches to achieve the optimum morphology for a BHJ OPV. While there are some distinct differences, there are also some commonalities. It is evident that morphology and the control of the morphology are important for device performance and, by controlling the thermodynamics, in particular, the interactions of the components, and by controlling kinetic parameters, like the rate of solvent evaporation, crystallization and phase separation, optimized morphologies for a given system can be achieved. While much research has focused on P3HT, it is evident that a clearer understanding of the morphology and the evolution of the morphology in low bad gap polymer systems will increase the efficiency further. While current OPVs are on the verge of breaking the 10% barrier, manipulating and controlling the morphology will still be key for device optimization and, equally important, for the fabrication of these devices in an industrial setting.

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“…For a load resistance of 600 Ω, the measured cell voltage was 0.51 V. Taking the reported value of μ of 1.7 × 10 -3 cm 2 V -1 s -1 [20] gives a transit time of 83 ns. The time required to discharge the solar cell through the load resistor, or so-called RC time constant, is given by…”

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Organic solar cells as high-speed data detectors for visible light communication

Zhang¹,

Tsonev²,

Videv³

et al. 2015

Optica

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We show that solar cells, widely used in portable devices for power generation, can simultaneously extract a highspeed data signal in an optical wireless communication link. This paper reports the first use of an organic solar cell as an energy-harvesting receiver for visible light communications (VLC). While generating maximum power in the cell, the communication link can deliver a data-rate of 34.2 Mbps with a bit error rate of 4.08 × 10 -4 using an implementation of orthogonal frequency division multiplexing. This approach could lead to printed optical data receivers in future eco-friendly VLC systems. The looming radio frequency (RF) spectrum crunch has prompted research into alternative regions of the electromagnetic (EM) spectrum for future wireless communication systems. The infrared and visible light region of the EM spectrum are of particular interest since the vast amount of available bandwidth is unregulated and free of electromagnetic interference (EMI). The growing infrastructure of LED lighting offers a particular opportunity for visible light communications (VLC) with power-efficient dual-use sources, which provide simultaneous illumination and very high rate wireless data transmission [1][2][3][4][5]. While VLC data links normally use photodiode (PD) receivers [5] (either positive-intrinsic-negative (PIN) PDs or avalanche PDs), there is a parallel opportunity for duality by using instead a solar cell for simultaneous energy harvesting and data detection. Wang et al. recently showed that a standard commercial multi-crystalline silicon solar panel could be used for this dual purpose, to receive a data-rate of 11.84 Mbps while generating approximately 2 mW of electrical power [6,7]. This advance implies that it could be possible for any piece of electronic equipment with an integrated solar cell to engage in highspeed data communication while utilising the energy from the light signal or ambient lighting to power the receiver electronics.However, to unlock the full potential of this approach it would be very attractive to use an alternative solar cell technology that could be more easily integrated on different devices/substrates, or even be mechanically flexible. The field of organic electronics offers these possibilities, and here we report the first use of an organic semiconductor solar cell as the energy-harvesting receiver in an optical wireless data link. When the cell generates maximum power, the communication link is capable of delivering a data-rate of 34.2 Mbps with a bit error rate (BER) of 4.08 × 10 -4 using an implementation of orthogonal frequency division multiplexing (OFDM). Such organic solar cells could serve as a future platform for ubiquitous VLC receivers. They can be mass manufactured by roll-to-roll printing on a flexible foil [8], giving the possibility of very inexpensive flexible/conformal panels which could be integrated with an extremely wide range of devices. They offer relatively easy bandgap tuning through the visible which could allow a selective response to wavelengt...

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Simultaneous Enhancement of Open‐Circuit Voltage, Short‐Circuit Current Density, and Fill Factor in Polymer Solar Cells

Cited by 2,072 publications

References 44 publications

Molecular interfaces for plasmonic hot electron photovoltaics

Molecular interfaces for plasmonic hot electron photovoltaics

On the morphology of polymer‐based photovoltaics

Organic solar cells as high-speed data detectors for visible light communication

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