Banca de QUALIFICAÇÃO: LUCAS POLIMANTE SOUTO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : LUCAS POLIMANTE SOUTO
Date: 16/03/2026
TIME: 14:00
LOCAL: PRESENCIAL - S.A.
TITLE:

Exploring charge carrier processes in perovskite solar cells using small perturbation methods

PAGES: 80
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

The global search for technologies capable of generating energy in a clean, renewable, and sustainable way has been increasing and shifted the focus of research to materials and devices capable of meeting these needs. Perovskite solar cells have attracted much attention due to their high light-to-electricity conversion efficiency (25.7%) and low cost. However, electronic and electrochemical processes such as recombination, movement, and accumulation of charges and ions at cell interfaces directly affect their efficiency and long-term stability. A crucial tool to understand these processes is Electrochemical Impedance Spectroscopy (EIS). This work inserts this context by preparing perovskite solar cells with reproducible photovoltaic results. The morphology of ETL and perovskite layers was evaluated by Scanning Electron Microscopy (SEM), showing the uniformity of layers. The compiled photovoltaic parameters determined over time showed a trend of increasing efficiency and reproducibility of the results. It was possible to obtain a solar cell with the highest efficiency value recorded in the laboratory, corresponding to 15.5% and 18.6% in forward and reverse measurements, respectively. The EIS experiments in the dark, varying the alternating current potential, resulted in a pseudo-linear region between 5 and 20 mV and allowed the investigation of ion diffusion processes in the solar cell.

COMMITTEE MEMBERS:
Presidente - Interno ao Programa - 1545089 - DANIEL ZANETTI DE FLORIO
Membro Titular - Examinador(a) Interno ao Programa - ***.171.538-** - ANDRÉ LUIZ MARTINS DE FREITAS - UFABC
Membro Titular - Examinador(a) Interno ao Programa - 2249395 - THIAGO BRANQUINHO DE QUEIROZ
Membro Titular - Examinador(a) Externo à Instituição - ARYANE TOFANELLO DE SOUZA - UFABC
Membro Suplente - Examinador(a) Interno ao Programa - 1544341 - WENDEL ANDRADE ALVES
Membro Suplente - Examinador(a) Interno ao Programa - 1760527 - FLAVIO LEANDRO DE SOUZA
Membro Suplente - Examinador(a) Interno ao Programa - 1552290 - ANDRE SANTAROSA FERLAUTO
Membro Suplente - Examinador(a) Externo ao Programa - 2351974 - JULIANA DOS SANTOS DE SOUZA SILVA