Background
Perovskite solar cells are globally recognized as a highly promising next-generation photovoltaic technology, celebrated for their high power conversion efficiency, potential for low-cost manufacturing, and inherent flexibility and lightweight characteristics. Despite these advantages, their widespread commercialization remains contingent on surmounting two primary challenges: achieving long-term operational durability and establishing scalable mass production techniques. In response, Japan’s National Institute of Advanced Industrial Science and Technology (AIST), supported by the government’s Green Innovation Fund, has launched an intensified research and development program. This initiative involves crucial collaborations with leading Japanese companies and universities, strategically aimed at overcoming these technical hurdles and fortifying Japan’s global leadership in this vital energy sector.
Key Findings and Technical Progress
AIST has announced substantial progress in its pursuit of commercially viable perovskite solar cells, directly leveraging investments from the Green Innovation Fund. The core of AIST’s accelerated R&D program centers on two critical pillars: significantly enhancing long-term durability to achieve a practical operational lifespan of 15 to 20 years, and establishing advanced, scalable manufacturing systems capable of efficient and uniform cell production.
To address durability, AIST’s strategy encompasses optimizing perovskite material composition and developing robust encapsulation technologies to fortify barrier performance against environmental degradation from moisture and oxygen. This also involves the creation of high-performance electron and hole transport layers coupled with sophisticated interface engineering—all crucial for ensuring long-term device stability. Concurrently, the institute is pioneering scalable manufacturing techniques, notably roll-to-roll processes, designed to enable uniform film formation over large areas and substantially reduce production costs. By establishing these foundational technologies, AIST aims to fully realize the potential of perovskite solar cells for lightweight and flexible applications, particularly in sectors where conventional silicon-based photovoltaics are impractical, such as Building-Integrated Photovoltaics (BIPV) and the mobility sector.
Outlook and Strategic Significance
Looking ahead, AIST plans to further accelerate its development of durable materials and automated cell manufacturing systems. This strategic push is anticipated to culminate in the full commercialization of perovskite solar cells by the early 2030s. Concurrently, AIST intends to actively contribute to international standardization efforts, aiming to cement Japan’s global competitive advantage in this emergent photovoltaic technology.
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