Title : PVOLED electrical simulation and analysis using CdSe quantum dots as an active layer
Abstract:
Organic photovoltaics (OPs) have been notably developed in the last years, OLED technology is now on the market in devices such as smartphones and flat screens. On the other hand, organic solar cells (OSC) are been used in buildings and cars as solar windows and even in clothes to charge small batteries. The possibility to combine OSCs and OLEDs had been explored. This device, besides absorbing ambient light was also capable of reuse part of the light emitted by the OLED and recycle it and lower power consumption in the device. However, several materials were used for its implementation and expensive deposition techniques, which generates higher fabrication costs. In 2012 was developed OSC with 66% transparency using AgNW as transparent cathode and spin-coating deposition. Due to OSC’s low efficiencies, hybrid devices have been studied, the combination of organic and inorganic materials to increase efficiencies and lifetimes. An advantage of organic technology is that it requires very thin layers of material which allows the deposition of several layers without compromising the transparency of the device. It has been reported implementations of 4 OSC in tandem structure. In this work, we use the software Silvaco to simulate the electrical behavior of a hybrid Solar Cell/OLED device in tandem structure adding CdSe quantum dots as an active layer (donor/emissive) and transparent contacts for lowering power consumption in display applications. We achieved a theoretical 20% power consumption reduction using a AM 1.5 spectrum in the simulation.
