Nanostructured Electrodes Improve the Fill Factor of Organic Photovoltaics

Beck, Jonathan H.; Ray, Biswajit; Grote, Richard R.; Osgood, Richard M.; Black, Charles T.; Alam, Muhammad Ashraful; Kymissis, Ioannis

doi:10.1109/jphotov.2014.2315436

Cited by 7 publications

(4 citation statements)

References 43 publications

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“…357 Shortly after, an improved charge collection in 20 /C 60 devices was achieved by using nanostructured electrodes, instead of the usual planar morphology, which resulted in a gain in the field factor (FF) and PCE. 358 Another interesting example was reported by Lo et al demonstrating that a UV ozone treated ITO/ZnO anode can improve the performance and stability of 20 /C 60 OSCs. 359 The authors suggested that this enhancement is due to a higher work function of such anode and a better SubPc absorption triggered by the light scattering of ITO/ZnO surface.…”

Section: Subphthalocyaninesmentioning

confidence: 95%

Recent advances in subphthalocyanines and related subporphyrinoids

et al. 2022

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Section: Subphthalocyaninesmentioning

confidence: 95%

Recent advances in subphthalocyanines and related subporphyrinoids

et al. 2022

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“…The carrier mobility value is central to the J sc value. As is the case for most organic materials, the conductivity of AlPcCl layers is low, which limits the J sc and FF values . Thus, any improvement made to the hole mobility of AlPcCl should improve the performance of the OPVC.…”

Section: Resultsmentioning

confidence: 99%

The Influence of Deposition Rates on Properties of AlPcCl Thin Films and on the Performance of Planar Organic Solar Cells

Mohammed-Krarroubik

Morsli

Khelil

et al. 2017

Physica Status Solidi (a)

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The performance of organic photovoltaic cells depends on different properties of the organic materials, such as carrier mobility, band structure, morphology, and crystallinity. For AlPcCl, it is shown that these properties are dependent on the layer deposition rates. As the deposition rate increases, the surface roughness of AlPcCl layers decreases. In contrast, the crystallinity of the layers increases as the deposition rate decreases, thereby increasing the hole mobility value. These effects are opposed: the former effect allows higher open circuit voltages to be obtained as the deposition rate increases, whereas the latter increases the short circuit current as the deposition rate decreases. Therefore, there is a trade‐off between open and short circuit current values, and it is necessary to find the best deposition rate for AlPcCl. Here, it is shown that the highest mobility carriers in layers deposited slowly allow the use of thicker AlPcCl layers, which permits acceptable open circuit voltage values and optimum photovoltaic cell efficiencies to be obtained. This results in an optimum efficiency value of 3.97% for a 26‐nm‐thick AlPcCl film that is deposited at 0.02–0.03 nm s−1.

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“…Since P3HTdonor material used as buffer layer also acts as an additional light absorbing layer, it increases J GEN of the device. Various studies suggests that, the absorption in the photoactive layer can be enhanced by scattering the incident light with metal nanoparticles [38][39][40], nanoripples [41,42], nanogratings [42,43], and nanoelectrodes [44][45][46][47]. However, the major challenges with these techniques are complexity in synthesising nanoparticles of such small dimensions, high-quality precision in several nanometres, and process technology limitations which restricts its use in largescale solar cell fabrication.…”

Section: Spectral Absorption and Quantum Efficiency Measurementmentioning

confidence: 99%