GoPV Project: New generation materials for tandem solar cells

Gennaro Vincenzo Sannino^a^,^b, Lucia Vittoria Mercaldo^a, Paola Delli Veneri^a, Michele Pavone^b, Antonio Terrasi^c, Antonio Abate^d, Martina Zanolini^e, Annamaria Petrozza^e, Matteo Degani^f, Giulia Grancini^f, Filippo De Angelis^g, Erica Magliano^h, Aldo Di Carlo^h, Cosimo Anichiniⁱ, Francesco Bonaccorsoⁱ

^aItalian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici(NA) 80055, Italy

^bINSTM, National Interuniversity Consortium of Materials Science and Technology (INSTM), Florence 50121, Italy

^cDepartment of Physics and Astronomy “Ettore Majorana”, University of Catania, Catania 95123, Italy

^dDepartment of Chemical Materials and Production Engineering, University of Naples Federico II, Naples 80125, Italy

^eCenter for Nano Science and Technology@Polimi, Istituto Italiano di Tecnologia, Milano 20134, Italy

^fDepartment of Chemistry, University of Pavia, Pavia 27100, Italy

^gDepartment of Chemistry, Biology and Biotechnology, University of Perugia, Perugia 06123, Italy

^hCHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, Tor Vergata University of Rome, Rome 00118, Italy

ⁱBeDimensional S.p.A., Genova 16163, Italy

NIPHO25
Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO25)

Cagliari, Italy, 2025 June 9th - 10th

Organizers: Giulia Grancini, Daniela Marongiu and Aldo Di Carlo

Oral, Gennaro Vincenzo Sannino, presentation 026
Publication date: 24th April 2025

GoPV is an Italian-based national project focused on studying new generation materials (absorbers and selective contacts) for perovskite and silicon heterojunction solar cells with the target of designing and realizing innovative perovskite/silicon and perovskite/perovskite tandem devices. Weaknesses in the emerging technologies of perovskite and Si heterojunction solar cells are being tackled. As for perovskite, organic-inorganic hybrid films are in use in single-junction and tandem-junction solar cells with record efficiencies. In view of a large-scale application of this technology, doubts related to the use of lead and organic groups need to be dispelled due to the possible effects on human health and the device stability over time, respectively. Therefore, inorganic perovskites, perovskites without lead or with reduced lead content, and, more generally, perovskite films with different bandgaps are being developed in the project. Regarding Si heterojunction cells, highly transparent selective contact materials are being evaluated as an alternative to doped silicon films deposited via PECVD, with the aim of minimizing parasitic optical absorption in the cell and evaluating less costly deposition techniques with fewer process safety issues. Transparent and conductive materials for the front contact of the devices are also being evaluated, aiming at reducing the use of scarce elements, such as indium contained in the commonly used indium-tin oxide.

In this presentation, the results obtained in the first period of the project will be presented and discussed. Various materials have been used to make different single-junction solar cells, such as dopant-free silicon heterojunction cells, low and high bandgap perovskite cells, lead-free perovskite cells, inorganic perovskite cells, etc. Preliminary results on perovskite/Si and perovskite/perovskite tandem cells will also be discussed.

nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.

MATSUS

Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.

International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics

The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.

International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics

The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.