Perovskite/silicon tandem solar cells with high power conversion efficiencies have the potential to become a commercially viable photovoltaic option in the near future. However, device design and optimization is challenging because conventional characterization methods do not give clear feedback on the localized chemical and physical factors that limit performance within individual subcells, especially when stability and degradation is a concern. In this study, we use light beam induced current (LBIC) to probe photocurrent collection nonuniformities in the individual subcells of perovskite/silicon tandems. The choices of lasers and light biasing conditions allow efficiency-limiting effects relating to processing defects, optical interference within the individual cells, and the evolution of water-induced device degradation to be spatially resolved. The results reveal several types of microscopic defects and demonstrate that eliminating these and managing the optical properties within the multilayer structures will be important for future optimization of perovskite/silicon tandem solar cells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpclett.6b02415 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Deciphering the Impact of Aromatic Linkers in Self-Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic.
Angew Chem Int Ed Engl
December 2024
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.
Aromatic linker-constructed self-assembled monolayers (Ar-SAMs) with enlarged dipole moment can modulate the work function of indium tin oxide (ITO), thereby improving hole extraction/transport efficiency. However, the specific role of the aromatic linkers between the polycyclic head and the anchoring groups of SAMs in determining the performance of perovskite solar cells (PSCs) remains unclear. In this study, we developed a series of phenothiazine-based Ar-SAMs to investigate how different aromatic linkers could affect molecular stacking, the regulation of substrate work function, and charge carrier dynamics.
View Article and Find Full Text PDFA review: strategies for reducing the open-circuit voltage loss of wide-bandgap perovskite solar cells.
Chem Commun (Camb)
December 2024
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, Jiangsu, P. R. China.
Perovskite-based tandem solar cells (PTSCs) have made remarkable achievements in recent years, and the highest certified power conversion efficiency (PCE) of 33.9% has been achieved in perovskite/silicon tandem solar cells (PSTSCs), indicating their great commercialization potential. Nevertheless, the performance of PTSCs continues to be hindered by the compromised performance of wide-bandgap perovskite solar cells (WPSCs), particularly the high deficit of WPSCs.
View Article and Find Full Text PDFSurface reconstruction of wide-bandgap perovskites enables efficient perovskite/silicon tandem solar cells.
Nat Commun
December 2024
Ministry of Education Engineering Research Center for Brittle Materials Machining, Institute of Manufacturing Engineering, College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, 361021, PR China.
Wide-bandgap perovskite solar cells (WBG-PSCs) are critical for developing perovskite/silicon tandem solar cells. The defect-rich surface of WBG-PSCs will lead to severe interfacial carrier loss and phase segregation, deteriorating the device's performance. Herein, we develop a surface reconstruction method by removing the defect-rich crystal surface by nano-polishing and then passivating the newly exposed high-crystallinity surface.
View Article and Find Full Text PDFPerovskite/Silicon Tandem Solar Cells Above 30% Conversion Efficiency on Submicron-Sized Textured Czochralski-Silicon Bottom Cells with Improved Hole-Transport Layers.
ACS Appl Mater Interfaces
November 2024
Institute of Electrical and Microengineering (IEM), Photovoltaics and Thin-Film Electronics Laboratory (PV-Lab), École Polytechnique Fédérale de Lausanne (EPFL), Rue de la Maladière 71b, 2000 Neuchâtel, Switzerland.
Article Synopsis
- * Combining two phosphonic acid compounds, Me-4PACz and another PA with different functional groups, enhances film formation, improves charge transport, and reduces energy losses at the interface.
- * Achieving a high current density of 40.2 mA/cm and greater than 30% power conversion efficiency, this research showcases the potential for creating highly efficient and industry-compatible tandem solar cells.
Regulation of Wide Bandgap Perovskite by Rubidium Thiocyanate for Efficient Silicon/Perovskite Tandem Solar Cells.
Adv Mater
December 2024
Semiconductor Physics Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 10083, P. R. China.
Developing high-quality wide bandgap (WBG) perovskites with ≈1.7 eV bandgap (E) is critical to couple with silicon and create efficient silicon/perovskite tandem devices. The sufferings of large open-circuit voltage (V) loss and unstable power output under operation continuously highlight the criticality to fully develop high-quality WBG perovskite films.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!