Commencement of Joint Research on Film-type Perovskite Solar Cells with the Tokyo Metropolitan Government

  SEKISUI CHEMICAL CO., LTD. (President: Keita Kato; hereinafter “SEKISUI CHEMICAL”) announces that it has decided to commence joint research on film-type perovskite solar cells with the Tokyo Metropolitan Government. Film-type perovskite solar cells will be installed at the Morigasaki Water Reclamation Center by spring 2023, the power generation amount will be monitored, and durability against corrosion will be checked.

1. Background of joint research

  As climate change is becoming a global issue and renewable energy expansion is required to create a sustainable society, installation site limitations for silicon solar cells due to weight and other factors have become an issue. Film-type perovskite solar cells are a next-generation type of solar cell that are lightweight and flexible, enabling installation at various sites, such as building walls, roofs with limited load bearing, or curved surfaces. They are expected to accelerate the spread and expansion of renewable energy, greatly contributing to achieving carbon neutrality.

Film-type perovskite solar cells
Film-type perovskite solar cells

2. Joint development details

1) Implementation location

  Morigasaki Water Reclamation Center (East series), Bureau of Sewerage, Tokyo Metropolitan Government
  Location: 2-5-1 Showajima, Ota-ku, Tokyo

2) Purpose

  For the installation of film-type perovskite solar cells, SEKISUI CHEMICAL believes that public facilities with large-scale buildings, such as sewage facilities, are an important potential market, which will contribute to the realization of a decarbonized society, and thus will examine the viability of installing them at sewage facilities.

3) Main implementation details

  Film-type perovskite solar cells will be installed on a portion of treatment tank covers by spring 2023, power generation efficiency will be measured, and corrosion resistance performance and other aspects will be verified.

3. Division of roles

Tokyo Metropolitan Government:

Overall coordination; perovskite solar cell installation site provision; technical advice and evaluation


Research plan formulation; perovskite solar cell installation, measurement and analysis; research and development for application at sewage facilities

4. Future development of film-type perovskite solar cells

  SEKISUI CHEMICAL achieved outdoor durability of 10 years equivalent ahead of the rest of the industry through original “sealing, film formation, materials and process technology,” creating a 30 cm-wide roll-to-roll manufacturing process. This manufacturing process has been successfully used to produce film-type perovskite solar cells with power generation efficiency of 15.0%.
  Starting from FY2023, SEKISUI CHEMICAL will proceed with technological verification as well as installation and construction method establishment through installation in a variety of applications, including this one. It will also leverage the Green Innovation Fund of the New Energy and Industrial Technology Development Organization (NEDO) to establish a manufacturing process for 1 m-wide rolls and promote development to further improve durability and power generation efficiency, aiming for commercialization in 2025.


Film-type Perovskite Solar Cells Installed in Umekita (Osaka) Station (Announced on August 3, 2022)

  SEKISUI CHEMICAL Group set its vision statement as “Innovation for the Earth” in Vision 2030, its long-term vision. We announced to support the basis of LIFE and will continue to create “peace of mind for the future” in order to realize a sustainable society. We are working on new technologies and businesses that contribute to decarbonization.
  Going forward, we will contribute to solving social issues to achieve sustainable growth for the Group and increase the sustainability of society, and work to continue to be trusted by all of our stakeholders.


Headquartered in Japan, SEKISUI CHEMICAL CO., LTD. (TSE: 4204) and its subsidiaries make up the SEKISUI CHEMICAL Group. 26,000 employees in over 190 companies throughout 21 countries aim to contribute to improving the lives of the people of the world and the earth’s environment. Thanks to a history of innovation, dedication and a pioneering spirit, SEKISUI CHEMICAL now holds leading positions in its three diverse business divisions as well as top global market share in interlayer film, foam products, conductive particles and more.
Since its foundation in 1947, the SEKISUI CHEMICAL Group has dedicated itself to social and environmental contribution and is now an internationally recognized leader in sustainability and environmental initiatives, having recently been selected as one of the Global 100 most sustainable companies. SEKISUI CHEMICAL Group will continue to maintain a strong corporate presence for 100 years and beyond.

Press contact

Public Relations Department, SEKISUI CHEMICAL


This press release may contain forward-looking statements. Such forward-looking statements are based on current expectations and beliefs and are subject to a number of factors and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements due to changes in global economic, business, competitive market and regulatory factors.