High Performing Organic Photvoltaic Cells and Modules for Indoor Application

Harvesting indoor light to power electronic devices for the Internet of Things became a potential market to be explored.<br/>In fact, a surge in the number of indoor appliances in various aspects of our daily life was observed making a strong development of the field of internet-of-things (IoT).<br/>In the last few years, organic photovoltaic (OPV) devices are reaching impressive efficiencies (PCE) up to 20 % making them one of the most promising solar technology.<br/>Importantly, OPV devices demonstrated high power conversion efficiencies as well as excellent stability under indoor conditions<br/>As a result, Indoor photovoltaic has emerged as an important candidate for powering low consumption devices dedicated for the Internet of Things using in different fields such as electronics, sensing..<br/>The rapid and exciting evolution of the OPV requires diversity in fabrication methods.<br/>Among them, inkjet printing has aroused considerable attention as a printing electronic technology for large-scale printed flexible and stretchable electronics with many advantages.<br/>Essentially, Inkjet printing has the advantage to provide freedom of forms and design on various substrates with good reliability, high time efficiency, a low manufacturing cost, low material usage comparing to other deposition techniques. These special characteristics have allowed inkjet to become an enabler of cost-effective attracting the researchers on functional devices such as photovoltaic solar cells (PV).<br/>Nevertheless, a number of challenges must be overcome in this technique, including stability of inks to avoid the nozzle clogging, the wetting behavior, compatibility of viscosity, surface tension with printheads.<br/>So, herein, in this work, we present all inkjet printed organic photovoltaic cells and modules with high efficiency for indoor application with freedom of shape and design fabricated by Dracula Technologies company.