Polymer Photovoltaics
Polymer Photovoltaics - Related Videos
02:34
Polymers
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2020
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
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.
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.
08:44
Tension Tests of Polymers
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Polymeric materials are widely used in civil structures, with uses ranging from very soft sealants to more rigid pipes in water and wastewater systems. The most basic definition of a polymer is a molecular structure with repeating subunits. The term polymer comes from Greek, where "poly" means many, and "-mer" means basic unit. Monomers, or single mers, are the specific repeating units. With...
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.
FAQs
The interface provides the location where photon-generated bound electron–hole pairs can separate. A semiconducting polymer acts as the electron donor, while an acceptor material provides a contrasting charge-transport pathway. Without effective separation, the generated charges remain paired rather than contributing efficiently to current. Interface design therefore links optical absorption to electrical output.
Blend morphology determines how donor and acceptor materials are arranged, affecting whether generated charge pairs can reach a separating interface and whether separated charges can travel onward. Layer thickness also changes the distance charges must traverse before reaching electrodes. Optimization therefore requires balancing the arrangement of materials and the charge-transport distance.
Selective electrodes provide separate collection routes for charges produced at the donor–acceptor interface. Their selectivity helps direct the appropriate charge toward its corresponding electrode instead of allowing indiscriminate collection. This completes the conversion from separated charges to measurable current, making electrode choice and placement important parts of device architecture.
Compared with conventional inorganic devices, Polymer Photovoltaics offer a different design profile: they can be lightweight, flexible, and processed from solution. These attributes matter when a light-responsive device must conform to a surface or occupy little space. The comparison therefore concerns not only energy conversion, but also form factor and fabrication compatibility.
Environmental stability is a central design consideration because device performance depends on how well the polymer structure and assembled layers retain their function under operating conditions. This issue is particularly relevant for wearable or implantable formats near biological tissues. Evaluating stability helps determine whether a flexible device can remain useful beyond its initial operation.
Biology-related research can use these devices as low-profile light sensors and as components of wearable or implantable interfaces. Their flexibility supports conformity to biological environments, while tunable optical properties allow light-response characteristics to be adjusted for a particular design. These features make them relevant where rigid or bulky device formats would be less suitable.