Flexible Photovoltaics on Plastics
Organic Photovoltaics (OPVs) are the 3rd generation of PV technologies and can generate electricity from sun.
R2R processing promises high-throughput, cost-efficient & large-area production of OPV devices with any custom shape and size in a variety of colours. OET’s OPV modules on plastics target both existing markets and mainly new emerging markets. OPVs are also ideal for a wide range of niche applications extending from portable electronics to smart packaging, wearables, automotive, greenhouses and building-integrated systems.
Organic PVs: Superior Characteristics Compared With Si-Based PVs
OPVs are very thin and flexible, lightweight (<0.5kg/m2), can be produced by R2R printing processes, can be used under ambient interior lighting, can be made in custom shapes and sizes.
In addition, ΟΕΤ’s OPVs can be produced in a variety of colours (red, green, blue, gray, etc.) and transparency (0-30%), in custom shapes and sizes, with aesthetic patterns, enabling the opportunity to be easily installed in buildings decoration, window interfaces, architecture designs, etc. Their flexibility and weight (<0.5kg/m²) make them the appropriate solution for mounting on curved surfaces, textiles & wearables and in any other portable application. Their competitive advantage in PV-technologies is that they can produce energy under low light and indoor lighting.
- Transparent (0-30%)
- Thin (<1mm)
- Lightweight (<0.5kg/m²)
- Custom Shapes & Sizes
- Variety in Colours (Burgundy, Grey, Light Blue, Green)
- Efficient Under Low Light & Indoor Lighting
- Custom Shapes & Sizes
- Easy Adaptation (Static & Portable Applications In Various Environments)
- Aesthetic Patterns Maintaining Optical Transparency
R2R Production for Large-Scale Manufacturing
OET designs and develops R2R printing, laser processing and quality control technologies, aiming at cost-effective, high-throughput manufacturing of OPVs on flexible plastic surfaces. Its progress in scalable production and achieving the nanoscale precision in R2R printing machines, optical engineering, reduction of manufacturing costs and increasing yield and efficiency of OPVs is based on a huge R&D investment took place the last years in developing unique production lines, laser scribing technologies and in-line optical precision metrology and quality control tools.
OET’s experienced engineers have designed, developed and optimized a unique and versatile R2R printing manufacturing plant with a production capacity of OPVs of >100.000 m2 /year and planned to be manufactured a production capacity of 1.000.000 m2 /year by 2019.
At the present moment OET’s R&D team reached a record in power conversion efficiency of 7.4% for a fully Roll-to-Roll (R2R) printed polymer-based single junction Organic Photovoltaic (OPV) cell. More information on the topic is available here.
Process Technology Platform
OET has expertise in materials processing, deposition and characterization for scalable manufacturing OPV devices. OET develops the Process Technology platform for the cost-efficient production of OPVs by optimizing all the key parameters that affect the R2R printing processes, the lifetime and the OPVs efficiency, such as ink modification, printing speed, drying conditions, morphology & phase separation, design and architecture, laser scribing, thin barrier films and encapsulation.
“Fully gravure printed organic photovoltaic modules: A straightforward process with a high potential for large scale production”, Solar Energy Materials and Solar Cells (2016) pp. 724-731. DOI: 10.1016/j.solmat.2015.10.021
“Improvement of Inverted OPV Performance by Enhancement of ZnO Layer Properties as an Electron Transfer Layer”, Materials Today: Proceedings 3 (2016) 758 – 771, DOI: 10.1016/j.matpr.2016.02.007
“Gravure Printed Organic Photovoltaic Modules Onto Flexible Substrates Consisting of a P3HT:PCBM Photoactive Blend”, Materials Today: Proceedings 3 ( 2016 ) 746 – 757 DOI: 10.1016/j.matpr.2016.02.006