奈良先端科学技術大学院大学 物質創成科学領域

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Education and Research Activities in the Laboratory

Our research focuses on the development of advanced thin-film semiconductor devices, particularly transistors and solar cells, and on understanding the physical principles that connect material synthesis, material properties, and device performance. We take a flexible research approach by combining experiments, simulations, and data-driven methods, including device fabrication, characterization, and device simulation. Our thin-film synthesis methods include physical vapor deposition, chemical vapor deposition, and solution processing, each requiring knowledge of physics and chemistry. Through this multidisciplinary research, we aim to educate students to become researchers and engineers who can tackle challenges in semiconductor devices and materials from multiple perspectives.

Research Themes

1. Thin-film materials and device integration for ultralow-power electronics

We investigate thin-film materials and device structures, including oxide semiconductors and contact-controlled devices, and their integration into functional electronic systems. Our work focuses on distinctive material–device interactions and novel architectures to enable ultra-low-power operation.

2. Oxide semiconductors for integrated device application

We are developing oxide semiconductor materials, their deposition processes, and device integration technologies for next-generation semiconductor memories and integrated circuit applications.

3. Combustion synthesis for enhanced performance of thin-film transistors

We are investigating a combustion synthesis approach of fabricating solution-processed metal oxides, and optimizing the synthesis parameters of combustion precursors for enhanced thin-film transistor performance.

4. Thin-film solar cells

We are developing new thin-film solar cells using BaSi2, SnS, and Bi compounds, which have high photoabsorption capabilities. Device development is accelerated by ideal designs enabled by device simulations and virtual screening.

5. Layered materials

Group-IV 2D nanosheets are a class of layered semiconductors having attractive properties such as high theoretical carrier mobility and large band gaps. To pioneer the applications to high performance semiconductor devices, we are studying thin film synthesis techniques and physical properties.

Explanatory Pictures of Research Activities

Fig. Outline of research activities, including investigations into thin film properties and the development of semiconductor devices.