Comprehending the charge recombination processes in perovskite solar cells

• Grant number: 22/07268-8
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2023
• End date: January 31, 2025
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: André Sarto Polo
• Grantee: André Sarto Polo
• Host Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Santo André , SP, Brazil
• City of the host institution: Santo André
• Associated researchers: Andre Santarosa Ferlauto ; José Antonio Souza

Abstract

Perovskite solar cells (PSCs) are one of the most promising technologies for the future of solar energy conversion. The low-cost and easily processable materials that result in high-efficient devices increase the interest in developing this technology. The most recent Power Conversion Efficiency (PCE) record is 25.7%. Even being a high PCE value, the value is far from the Shockley-Queisser limit, which is 31.64% for a single-junction solar cell having a semi-conductor with a band-gap of 1.5 eV. To improve the PSCs performance to be close to the Shockley-Queisser limit it is necessary to understand the charge recombination pathways in these devices and include modifications to reduce such loss mechanisms. In this proposal, we will use several techniques to investigate loss mechanisms to understand charge-recombination pathways and suggest modifications aiming to reduce them. It is also of interest, the investigation of new materials for the preparation of PSCs in two distinct device architectures (mesoporous and inverted). The correlation between the PSCs performances using these new materials and the charge-recombination pathways will be established. Finally, we will use several techniques to investigate the reasons for the reduced durability of the devices and modifications will be implemented to improve the PSCs long-term operation. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

LOAGUE, QUENTIN; KELLER, NIKLAS D.; MULLER, ANDRESSA V.; ARAMBURU-TROSELJ, BRUNO MARTIN; BANGLE, RACHEL E.; SCHNEIDER, JENNY; SAMPAIO, RENATO N.; POLO, ANDRE S.; MEYER, GERALD J.. Impact of Molecular Orientation on Lateral and Interfacial Electron Transfer at Oxide Interfaces. ACS APPLIED MATERIALS & INTERFACES, v. 15, n. 28, p. 14-pg., 2023-07-07. (18/08038-0, 16/24020-9, 22/07268-8, 19/23277-4)

POLIMANTE, LUCAS; DA SILVA, JULIANA PEREIRA; FERREIRA, FABIO FURLAN; POLO, ANDRE SARTO. Enhancing the stability of methylammonium-based perovskite solar cells prepared in ambient conditions by adding formamidinium cations. SOLAR ENERGY MATERIALS AND SOLAR CELLS, v. 285, p. 8-pg., 2025-06-15. (17/11986-5, 23/09820-2, 22/07268-8)