ゼロ次元ペロブスカイト量子ハイブリッドを用いた高効率陽電池に関する研究

2017 Fiscal Year Annual Research Report

• Project/Area Number: 17F17815
• 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): MCDONALD CALUM 国立研究開発法人産業技術総合研究所, 太陽光発電研究センター, 外国人特別研究員
• Project Period (FY): 2017-11-10 – 2020-03-31
• Keywords: nanocrystals / solar cells / iodobismuthate

Outline of Annual Research Achievements

The aim of the project is to investigate zero-dimensional perovskites and inorganic nanocrystals for their application as extremely thin absorber (ETA) layers for photovoltaic devices with high efficiencies. We have successfully synthesised of organometal methylammonium iodobismuthate nanocrystals. We have characterised nanocrystals via the ultraviolet-visible absorption and photoluminescence techniques. During this time, we optimized a baseline bulk organometal methylammonium iodobismuthate solar cells and basic characteristics of solar cells were measured.In addition, during the first four months Calum was also trained in necessary deposition and characterization techniques for fabrication and characterization of the materials and devices.

Current Status of Research Progress

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

Reason

The first four months was concerned the synthesis and characterisation of organometal halide perovskite nanocrystals. We have successfully synthesised of organometal methylammonium iodobismuthate nanocrystals and evaluated the ultraviolet-visible absorption, band gap and photoluminescence at room temperature. During this time, we also worked on optimizing a baseline bulk organometal methylammonium dobismuthate solar cells. Devices were characterised. In addition, during the first four months Calum was also trained in necessary deposition and characterisation techniques for fabrication and characterization of the materials and devices.

Strategy for Future Research Activity

Organometal methylammonium iodobismuthate nanocrystals will be synthesised in solution and subsequently centrifuged at different speeds to select the particle size. All necessary precursors will be purchased from chemical suppliers. Solar cell devices will be fabricated based on organometal methylammonium iodobismuthate nanocrystals. Hybrids of organometal nanocrystals and p-/n-type silicon nanocrystals will be explored in order to demonstrate an increase in the carrier transport through assisted exciton dissociation. Furthermore, nanocrystals of the strongly-absorbing metal oxide strontium niobate, with possible plasmonic behaviour, will be introduced. We expect that by using an electrode with a lower conduction band than the commonly used electrode (TiO2) such as MoO3.