I am an electronic engineer with over 5 years’ progressive experience in R&D of electronic devices within (but not limited to) organic electronics. I gained expertise in the research field of OPV, OLED, TFT and MEMristor. I continuously enhance my knowledge in the advanced nanotechnology thanks to my natural passion in being up to date about the wide-ranging R&D. I have constantly been improving my scientific network and satisfying my interest both at work and outside. Address: Gordon Street, London, United Kingdom
ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architec... more ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architecture to achieve record performance for most photovoltaic technologies. In fact, tandem architectures allow devices to significantly broaden their overall absorbance spectra providing higher conversion efficiencies compared to individual cells. However, up to now, this has not been true for DSCs where record performances have been always obtained with single cells. This is mainly due to the difficulty of realizing integrated tandem DSC configurations where interlayer losses are minimized. Thus, we propose a new tandem architecture that overcomes the limitation presented so far by tandem DSCs, reporting an efficiency of 6.66% with wide room for improvement. Experimental results are corroborated with two-dimensional device simulations which allow us to understand the working mechanisms and to define optimization routes for this novel architecture. This work opens the way for further optimization of DSC technology, well beyond the actual limits, and also discloses ideas for new possible structures in the related fields of TiO2 tandem catalysts which are important for the realization of solar fuels and electrolyte based devices.
ABSTRACT The aim of this work is to present a consistent model for simulation of organic solar ce... more ABSTRACT The aim of this work is to present a consistent model for simulation of organic solar cells (OPV) with a correct description of mobility, density of state, organic-metal contacts, and exciton. We simulate the photoconversion by means of an integration of the optical and electrical part: light absorption is calculated with a Transfer Matrix Model and the charge transport is computed using Drift Diffusion approach including the effect of energetically disorder materials. Most model parameters are directly taken from experiment. The model is used to study the effect of energetic disordered materials and cell thickness on the performance of the cell in terms of short circuit current, open circuit voltage, and fill factor. Based on the results of this model, it will be possible to design and predict the optimal thickness of OPV toward higher efficiencies.
ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architec... more ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architecture to achieve record performance for most photovoltaic technologies. In fact, tandem architectures allow devices to significantly broaden their overall absorbance spectra providing higher conversion efficiencies compared to individual cells. However, up to now, this has not been true for DSCs where record performances have been always obtained with single cells. This is mainly due to the difficulty of realizing integrated tandem DSC configurations where interlayer losses are minimized. Thus, we propose a new tandem architecture that overcomes the limitation presented so far by tandem DSCs, reporting an efficiency of 6.66% with wide room for improvement. Experimental results are corroborated with two-dimensional device simulations which allow us to understand the working mechanisms and to define optimization routes for this novel architecture. This work opens the way for further optimization of DSC technology, well beyond the actual limits, and also discloses ideas for new possible structures in the related fields of TiO2 tandem catalysts which are important for the realization of solar fuels and electrolyte based devices.
ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architec... more ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architecture to achieve record performance for most photovoltaic technologies. In fact, tandem architectures allow devices to significantly broaden their overall absorbance spectra providing higher conversion efficiencies compared to individual cells. However, up to now, this has not been true for DSCs where record performances have been always obtained with single cells. This is mainly due to the difficulty of realizing integrated tandem DSC configurations where interlayer losses are minimized. Thus, we propose a new tandem architecture that overcomes the limitation presented so far by tandem DSCs, reporting an efficiency of 6.66% with wide room for improvement. Experimental results are corroborated with two-dimensional device simulations which allow us to understand the working mechanisms and to define optimization routes for this novel architecture. This work opens the way for further optimization of DSC technology, well beyond the actual limits, and also discloses ideas for new possible structures in the related fields of TiO2 tandem catalysts which are important for the realization of solar fuels and electrolyte based devices.
ABSTRACT The aim of this work is to present a consistent model for simulation of organic solar ce... more ABSTRACT The aim of this work is to present a consistent model for simulation of organic solar cells (OPV) with a correct description of mobility, density of state, organic-metal contacts, and exciton. We simulate the photoconversion by means of an integration of the optical and electrical part: light absorption is calculated with a Transfer Matrix Model and the charge transport is computed using Drift Diffusion approach including the effect of energetically disorder materials. Most model parameters are directly taken from experiment. The model is used to study the effect of energetic disordered materials and cell thickness on the performance of the cell in terms of short circuit current, open circuit voltage, and fill factor. Based on the results of this model, it will be possible to design and predict the optimal thickness of OPV toward higher efficiencies.
ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architec... more ABSTRACT Tandem cells (or multi-junction cells) have been shown to be the most efficient architecture to achieve record performance for most photovoltaic technologies. In fact, tandem architectures allow devices to significantly broaden their overall absorbance spectra providing higher conversion efficiencies compared to individual cells. However, up to now, this has not been true for DSCs where record performances have been always obtained with single cells. This is mainly due to the difficulty of realizing integrated tandem DSC configurations where interlayer losses are minimized. Thus, we propose a new tandem architecture that overcomes the limitation presented so far by tandem DSCs, reporting an efficiency of 6.66% with wide room for improvement. Experimental results are corroborated with two-dimensional device simulations which allow us to understand the working mechanisms and to define optimization routes for this novel architecture. This work opens the way for further optimization of DSC technology, well beyond the actual limits, and also discloses ideas for new possible structures in the related fields of TiO2 tandem catalysts which are important for the realization of solar fuels and electrolyte based devices.
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