| Full text | |
| Author(s): |
Fonseca, Andre F. V.
;
Germano, Guilherme M.
;
Scalon, Lucas
;
de Almeida, Charles A. N.
;
Barra, Alvaro C. C.
;
Ribeiro, Douglas S.
;
Brandao, Zeno C.
;
Marques, Francisco C.
;
Mora-Sero, Ivan
;
Nogueira, Ana F.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | MATERIALS TODAY CHEMISTRY; v. 50, p. 8-pg., 2025-11-28. |
| Abstract | |
Interfacial defects at the buried junction between the electron transport layer (ETL) and perovskite absorber critically hinder the performance of perovskite solar cells (PSCs). In this work, we report that a CdS quantum dot (QD) interlayer, deposited onto SnO2 via a scalable successive ionic layer adsorption and reaction (SILAR) method, provides a practical and scalable strategy to improve charge transport across this interface. The CdS QD layer not only suppresses oxygen vacancies but also reacts with hydroxyl groups on the SnO2 surface, thereby improving surface potential uniformity and enhancing the electron extraction rate. Impedance spectroscopy further confirms improved interface homogeneity and charge transport, which correlate with higher fill factor and short-circuit current density. As a result, CdS modification enables a-25 % efficiency enhancement on PSCs, highlighting the potential of QD-based interfacial engineering towards high-performance PSCs. (AU) | |
| 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 - Applied Research Centers Program |
| FAPESP's process: | 23/10395-4 - Applying quantum dots passivation towards high-stability perovskite solar cells |
| Grantee: | André Felipe Vale da Fonseca |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 23/09924-2 - Study of electronic levels of charge carrier layers for use in perovskite solar cells |
| Grantee: | Zeno de Castro Brandão |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 24/05914-5 - Interfacial Behavior of Quantum Dots Integrated in Bulk Heterojunction Perovskite Films |
| Grantee: | André Felipe Vale da Fonseca |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 20/04406-5 - Perovskite solar cells from easy, cheap and green sources: a synergistic approach for the synthesis of new organic hole transport materials and the use of more environmental-friendly solvents |
| Grantee: | Lucas Scalon |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 21/12104-1 - Unveiling the role of chiral organic spacers on the structural, photophysical, and electronic properties of 2D and 2D/3D perovskite structures |
| Grantee: | Lucas Scalon |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |