On Improving the Efficiency of Organic Photovoltaic Devices: Novel Strategies

by Martí Gibert Roca, from the NANOPTO Group

Date: Wednesday, 15 June 2022
Time: 11:00 am
Venue: ICMAB - Sala d'Actes Carles Miravitlles and online. Register here to attend by Zoom.

Abstract:

This thesis is focused on organic solar cell efficiency enhancement, taking notably different approaches, from the development of basic manufacturing and characterization experimental setups, to the exploration of novel strategies focused on improving cell performance in various forms. To do so, we have developed an entire characterization environment capable of performing fast, reliable JV and EQE measurements in an automated way, as well as processing the generated data.

After that, we have explored the effect of active layer nanostructuring on the wavelength dependent response of organic solar cells and photodetectors, which resulted in higher light conversion efficiencies below the band gap of the photoactive material, arising from an increased charge transfer state absorption. Thirdly, we have investigated the effect of active layer temperature on organic solar cell efficiency, designing and building a temperature regulable JV characterization setup. Finally, we have devised a novel horizontal tandem architecture, based on spectral splitting and multi-material monolithic deposition, simulating and fabricating functional devices, as well as developing and building an entirely new experimental setup to characterize them.

Supervisor:

• Mariano Campoy Quiles, from the Nanostructured Materials for Optoelectronics and Energy Harvesting (NANOPTO) Group at ICMAB-CSIC

PhD Comittee:

• President: Henk J. Bolink, Universitat de València, Spain
• Secretary: David Amabilino, ICMAB-CSIC, Spain
• Vocal: Dr. Monica Della Pirriera, LEITAT, Spain

University: Universitat Autònoma de Barcelona
PhD Programme: Materials Science

Light homogenization prototype for the SOLS setup.