Hybrid Perovskite/Quantum dot cells for third generation photovoltaics

2022 Fiscal Year Annual Research Report

• Project/Area Number: 22F21766
• Allocation Type: Single-year Grants
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Svrcek Vladimir 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 主任研究員 (80462828)
• Co-Investigator(Kenkyū-buntansha): ALESSI BRUNO 国立研究開発法人産業技術総合研究所, エネルギー・環境領域, 外国人特別研究員
• Project Period (FY): 2022-04-22 – 2024-03-31
• Keywords: quantum dot / solar cell

Outline of Annual Research Achievements

The first year of JSPS Research Scholarship on perovskite FAPbI3 quantum dot solar cells has resulted in significant accomplishments. These include the successful setup of the instrumentation for synthesis, optimization of the spin coating process to achieve homogeneous films, exploration and optimization of synthesis protocols leading to improved Voc and higher PLQY, and surface engineering of quantum dots through a femtosecond laser generated plasma. The upcoming paper submissions to peer-reviewed journals and presentations at international conferences will provide an opportunity to disseminate these findings to the wider scientific community. The insights gained from this research will contribute to the ongoing development of perovskite solar cell technology, facilitating its potential for practical applications.
Surface engineering of quantum dots was achieved through the utilization of a femtosecond laser generated plasma. This technique allowed for precise adlayer deposition of a thin quantum dot layer in a FAPI perovskite solar cell. The surface-engineered quantum dots demonstrated enhanced power conversion efficiency (PCE) and short-circuit current (Isc), indicating improved device performance. Furthermore, indications of a longer lifetime were observed, suggesting increased stability. These significant results will also be presented at upcoming international conferences and published in peer-reviewed journals, showcasing the advancements made in surface engineering techniques for quantum dot solar cells.

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

The surface-engineered quantum dots indications of a longer lifetime were observed, suggesting increased stability. These significant results will also be presented at upcoming international conferences and published in peer-reviewed journals, showcasing the advancements made in surface engineering techniques for quantum dot solar cells.

Strategy for Future Research Activity

Optimization of QDs Synthesis Protocol and Solar Cell Fabrication. Perform a systematic exploration of synthesis protocols by engineering ligands in all quantum dot cells. This involves varying ligand types, concentrations, and reaction conditions to identify the most effective combination for high-quality quantum dot synthesis. Focus on achieving homogeneous films of FAPbI3 quantum dots through the spin coating process. c. Parameter Variation: Vary and optimize parameters such as spin speed, spin time, and precursor concentration to improve film uniformity and enhance solar cell performance. Design and optimize the solar cell architecture to maximize light absorption and carrier extraction efficiency.