あなたの研究テーマについて教えてください。What is your research theme?
My research is entitled “Development of BaSi₂ Double Heterojunction Solar Cells.” The primary objective of this study is to design and optimize a suitable heterostructure for BaSi₂-based double heterojunction solar cells by selecting appropriate charge transport materials. Owing to the inherently low electron affinity of BaSi₂, conventional charge transport layers are not suitable for efficient device performance. Through virtual materials screening, barium sulfide (BaS) and samarium oxide (Sm₂O₃) were identified as promising candidates for the hole transport layer and electron transport layer, respectively. The first stage of this research focuses on investigating the properties of BaS and Sm₂O₃ under various fabrication conditions to achieve high-quality thin films. The second stage involves examining the interfacial properties of BaSi₂ with BaS and Sm₂O₃ individually. Ultimately, this work aims to optimize and develop a high-performance BaSi₂ double heterojunction solar cell structure.
This research will introduce an optimized new solar cell structure for future automobile applications.
From a social perspective, the outcomes of this research can help to reduce carbon emissions, increase renewable energy adoption, enable affordable solar power solutions for remote and underdeveloped areas and contribute to global efforts against climate change.
From an academic perspective, by expanding the material science knowledge based on earth-abundant semiconductors, it can contribute to the academic field by introducing a novel heterojunction architecture with BaS as HTL and Sm₂O₃ as ETL. This work may provide novel insights into interface engineering, thin-film deposition via vapor transport, and band alignment optimization—providing a foundation for future high-efficiency, long-term stability and eco-friendly photovoltaic research.
なぜ博士課程へ進学しましたか？Why did you decide to pursue a doctoral program?
My research interest centers on solar energy materials and their applications. During my master’s studies, I investigated inorganic semiconductor materials for solar energy harvesting devices, gaining valuable insight into how material properties fundamentally affect device performance. This experience inspired me to broaden my expertise in semiconductor materials and their integration in energy conversion systems. I recognized that the complexities and scientific challenges inherent in advancing these technologies demand the rigorous analytical skills and innovative thinking that only a doctoral program can foster. Pursuing a PhD thus became the necessary next step, offering the deep, sustained research environment essential for addressing these critical questions.
Graniteの支援で役立っている・助かっていることを教えてください。Please share what has been helpful or beneficial through the support provided by Granite.
The support provided by the Granite has not only eased my financial burden but also given me the confidence and focus to pursue my research with full dedication.
In addition, Granite program helps in my personal skill development for my future career by joining in their career consultation, seminar and conferences.
将来の目標、もしくはあなたが胸に秘めた野望があればぜひ教えてください。Please share your future goals or any ambitions you hold close to your heart.
I hope to create innovative, sustainable technologies that positively impact both society and the environment.
博士課程進学を考えている人へのメッセージをください。Please share a message for those considering pursuing a doctoral program.
A PhD is challenging but incredibly rewarding. Take time to explore your interests, talk to mentors, and reflect on your goals, this clarity will help you dive in with confidence and purpose.
Explore your passions, seek guidance, and commit with purpose, then a PhD can be truly rewarding.
