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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reduced graphene oxide in perovskite solar cells: the influence on film formation, photophysics, performance, and stability

Full text
Author(s):
Marchezi, Paulo Ernesto [1] ; de Araujo, Francineide Lopes [1] ; Szostack, Rodrigo [1] ; Germino, Jose Carlos [1] ; Therezio, Eralci M. [2] ; Marletta, Alexandre [3] ; Nogueira, Ana Flavia [1]
Total Authors: 7
Affiliation:
[1] Univ Campinas UNICAMP, Chem Inst, Lab Nanotecnol & Energia Solar, POB 6154, BR-13083970 Campinas, SP - Brazil
[2] Univ Fed Mato Grosso, Phys Inst, Cuiaba - Brazil
[3] Univ Fed Uberlandia, Phys Inst, Uberlandia, MG - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF MATERIALS CHEMISTRY C; v. 9, n. 41 JUN 2021.
Web of Science Citations: 1
Abstract

Mixed-halide perovskites of the type Cs(x)FA(1-x)Pb(BryI1-y)(3) are promising materials for highly efficient single junction and tandem solar cells. This work details how RGO interacts with the perovskite, influencing film formation and its physico-chemical properties. RGO was introduced into the precursor solution to study how reduced graphene oxide (RGO) interferes with the crystallization, morphology, and optoelectronic properties of the perovskite film. By in situ GIWAXS experiments, a decrease in the rate of formation of the bulk perovskite phase was observed during the spin-coating and annealing processes. SEM-FEG images confirmed an increase in the grain size of the perovskite film that contained RGO. The most outstanding results were related to the stability of the devices. Devices with RGO-20 h (reduced for 20 hours) exhibited a higher stability, confirming that the films formed by larger grains have a slower rate of degradation. (AU)

FAPESP's process: 20/14451-8 - From small to large-area: a systematic study for the scale-up of perovskite solar cells
Grantee:Francineide Lopes de Araújo
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
Grantee:Ana Flávia Nogueira
Support Opportunities: Research Grants - Research Centers in Engineering Program