Organic Photovoltaic
Organic Photovoltaic - Related Videos
08:59
Concurrent Quantitative Conductivity and Mechanical Properties Measurements of Organic Photovoltaic Materials using AFM
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Cited by 3 •
2013
Organic photovoltaic (OPV) materials are inherently inhomogeneous at the nanometer scale. Nanoscale inhomogeneity of OPV materials affects performance of photovoltaic devices. In this paper, we describe a protocol for quantitative measurements of electrical and mechanical properties of OPV materials with sub-100 nm resolution.
11:06
Fabrication of Fully Solution Processed Inorganic Nanocrystal Photovoltaic Devices
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Cited by 4 •
2016
This protocol describes the synthesis and solution deposition of inorganic nanocrystals layer by layer to produce thin film electronics on non-conductive surfaces. Solvent-stabilized inks can produce complete photovoltaic devices on glass substrates via spin and spray coating following post-deposition ligand exchange and sintering.
11:30
Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
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Cited by 2 •
2017
A Time Resolved Microwave Conductivity technique for investigating direct and trap-mediated recombination dynamics and determining carrier mobilities of thin film semiconductors is presented here.
12:08
Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
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2015
The fabrication of high contrast gratings as the parallel spectrum splitting dispersive element in a concentrated photovoltaic system is demonstrated. Fabrication processes including nanoimprint lithography, TiO2 sputtering and reactive ion etching are described. Reflectance measurement results are used to characterize the optical performance.
09:00
Indoor Experimental Assessment of the Efficiency and Irradiance Spot of the Achromatic Doublet on Glass (ADG) Fresnel Lens for Concentrating Photovoltaics
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Cited by 3 •
2017
The achromatic doublet on glass (ADG) Fresnel lens makes use of two materials with differing dispersion to reduce chromatic aberration and increase attainable concentration. In this paper, a protocol for the complete characterization of the ADG Fresnel lens is presented.
FAQs
Light absorption creates excitons that must reach a donor–acceptor interface before they can separate into free charges. Because excitons diffuse through the semiconducting material, the location and accessibility of this interface influence how effectively generated energy becomes usable electrical current. Engineering the material arrangement therefore focuses on supporting exciton transport and charge separation rather than absorption alone.
The donor–acceptor interface provides the site where bound electron–hole pairs separate. This step converts photo-generated excitons into electrons and holes that can move toward different electrodes. If charge separation is not effectively supported at this boundary, absorbed light does not translate efficiently into electricity, making interfacial design an important engineering consideration for device performance.
Selective transport layers guide electrons and holes toward opposite electrodes after they separate at the donor–acceptor interface. Their function helps maintain distinct charge pathways and supports collection at the device contacts. In engineering designs, these layers connect the microscopic separation process to measurable electrical output by directing the two charge types through the intended device structure.
Development begins with arranging carbon-based semiconducting materials so that absorbed light produces excitons and donor–acceptor interfaces support charge separation. Engineers then incorporate selective transport layers and opposite electrodes to collect the charges. Evaluation focuses on electrical efficiency, operational stability, and resistance to environmental degradation, since practical performance depends on more than initial power conversion.
Their lightweight, flexible, and potentially semitransparent characteristics suit applications where conventional rigid devices may be less appropriate. Engineering examples include wearable electronics and building-integrated systems, where the power source can be incorporated into surfaces or devices with demanding form factors. These applications make mechanical adaptability and appearance important alongside electrical performance.
Low-temperature processing can support integration into applications that require less thermally demanding fabrication conditions, while indoor energy harvesting targets power generation under indoor lighting rather than relying only on conventional outdoor use. Together, these capabilities broaden the engineering contexts for organic photovoltaic systems, particularly in compact electronics and integrated environments where flexibility, form factor, or operating setting matters.