[15p-A402-1~9] 【Open Symposium】How can Applied Physics accelerate the green transformation for the sustainable future?

[15p-A402-6] Photovoltaic Power Generation Technology as a Main Power Source
- What kind of solar cell is necessary for the realization of a carbon-neutral society?

〇Makoto Konagai¹ (1.Tokyo City Univ.)

Keywords:solar cell, photovoltaics, Si solar cell

Photovoltaics, which was said to be expensive several decades ago, is now expected to become the cheapest main power source by 2030. In this presentation, I will describe the current status of photovoltaics' CO₂ reduction effect, production volume, and energy conversion efficiency, and then describe the limitations of the current mainstream Si solar cells. Next, we will introduce the development status of tandem solar cells, which aims to dramatically improve conversion efficiency. Finally, we will discuss the necessity of developing solar cells with application in mind. For nearly 50 years, the research and development of solar cells has been discussed mainly in the Japan Society of Applied Physics. The key technology for performance improvement is the development of control technology at the level of one monolayer at the interface.