Key Findings
In Japan, perovskite solar cells are receiving national attention as a core technology for ensuring energy security and achieving a decarbonized society. Leading industrial players such as Sekisui Chemical, Panasonic, Toshiba, and EneCoat Technologies, alongside prominent research institutions including Kyoto University, the National Institute of Advanced Industrial Science and Technology (AIST), and the National Institute for Materials Science (NIMS), are collaboratively driving the research, development, and demonstration of this innovative solar cell technology.
Technical Details
Japanese R&D efforts are focused on low-cost manufacturing, high efficiency, and versatile application possibilities for perovskite solar cells. A critical objective is the establishment of continuous production methods, such as roll-to-roll (R2R) printing. If realized, R2R production is expected to dramatically simplify manufacturing processes and substantially reduce production costs compared to conventional silicon solar cells. R2R enables high-speed, continuous deposition of perovskite layers onto flexible substrates like plastic films, leading to lighter, thinner, and highly adaptable modules for various shapes. This facilitates deployment in challenging locations such as building-integrated photovoltaics (BIPV) for windows and walls, and even vehicle bodies, where traditional solar cell installation has been difficult. Additionally, high power generation efficiency in low-light conditions, common in Japan’s often cloudy climate, presents a significant advantage.
Background & Context
Japan, being poor in energy resources, has long faced the national challenge of improving its energy self-sufficiency. Simultaneously, the country is urgently pressed to maximize renewable energy adoption to achieve its 2050 carbon neutrality goal. Perovskite solar cells are positioned as a ‘game-changer’ that can meet Japan’s unique environmental and policy demands. In a country with limited land for large-scale ground-mounted solar farms, perovskites, which can be easily integrated into building vertical surfaces and urban infrastructure, are deemed essential for transforming Japan’s energy mix. Under strong government support, active industry-academia collaboration is underway to establish internationally competitive technologies.
Strategic Significance & Outlook
The industry-academia-government collaboration in Japan for perovskite solar cell development is not merely about technological innovation; it holds a grand vision for redefining social infrastructure. If roll-to-roll technology is established and manufacturing costs are drastically reduced, solar cells will evolve from specialized power generation equipment into ‘power-generating social infrastructure’ integrated into all building materials and products. A future where windows generate electricity, car bodies charge themselves, and building walls produce power will promote local energy production for local consumption and enhance the resilience of communities. This technology is expected to become a crucial pillar for fundamentally reforming Japan’s energy structure and realizing a sustainable and self-sufficient society.
Source: https://www.youtube.com/watch?v=yEVakh-T1Jo
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