Fabrication of Monolithic Perovskite-on-Chalcogenide Photovoltaic Tandem Devices by Ultrasonic Spray Coating (R-11553)

Photovoltaic devices present an important solution for clean energy generation. Since the introduction of silicon solar panels, many new active materials have been pursued as a more efficient replacement. Low cost of production, low toxicity and high efficiency and lifetime are among the most desired characteristics for those devices, with flexibility and transparency enabling even more applications. In order to take those emerging technologies from the laboratory to industrial production, one key element is the transition of deposition methods. High throughput solution processing is preferred to spin coating or thermal evaporation. In this work, ultrasonic spray coating will be employed in the fabrication of 2 terminal Perovskite/CI(G)S tandem devices. The band gap tunability of both materials is crucial to achieve current matching between the two cells. By focusing on the deposition of the interlayer and subsequent perovskite cell on a rough CI(G)S, it is expected to produce highly efficient monolithic solar cells and modules (26% and 22% PCEs, respectively). Furthermore, low-lead/lead-free and 2D perovskite materials will receive particular focus as a means of reducing the toxicity and increasing the stability of the final device.

Keywords:solar energy, ultrasonic spray coating, CI(G)S, CIGS, CIS, large scale, lead-free, low-lead, monolithic, perovskite, photovoltaic, solution processing, tandem, thin film, two terminal

Disciplines:Photodetectors, optical sensors and solar cells, Solar energy