Development of next-generation solar cells
project overview
In order to achieve carbon neutrality in 2050, it is necessary to promote the maximum introduction of renewable energy, including solar power, with the aim of making it the main power source. In Japan, where there is little flat land, one possible way to secure suitable sites for solar power generation is to install it on the roofs of factories and walls of buildings with low load-bearing capacity, which could not be installed with existing technology. In order to realize installation in such a place, it is necessary to combine the lightness of the battery and the flexibility to install it on curved surfaces such as walls, and in terms of performance (conversion efficiency, durability, etc.), it is comparable to conventional silicon solar cells. It is essential to develop next-generation solar cells that
Therefore, in this project, we will develop the basic technology for next-generation solar cells (perovskite solar cells) and improve each manufacturing process (for example, coating process, electrode formation, sealing process, etc.) to realize larger product levels. Through research and development aimed at establishing individual elemental technologies, we aim to achieve a power generation cost of 14 yen/kWh or less, equivalent to that of conventional silicon solar cells, by 2030.
Project features
〇 Fundamental technology development project for next-generation solar cells
For perovskite solar cells, we have found the optimal combination from more than tens of thousands of methods of mixing raw materials and solutions. It is necessary to develop and standardize methods for analyzing and evaluating factors such as deterioration factors. For this reason, we will research and develop the optimal material composition of perovskite solar cells, elemental technologies for batteries that achieve both conversion efficiency and durability, and analysis and evaluation technologies.
〇 Practical application of next-generation solar cells
In order to realize a perovskite solar cell module that satisfies the configuration, conversion efficiency, durability, and power generation cost required by the installation site, we will increase the size of the product level while utilizing the fundamental technology of "development of basic technology for next-generation solar cells". We will conduct research and development to establish individual elemental technologies for each manufacturing process (for example, coating process, electrode formation, sealing process, etc.) to realize
〇 Demonstration project for next-generation solar cells
In order to establish mass production technology that enables mass production while stabilizing quality, we will realize high throughput and high yield as a series of linked production processes for each manufacturing process established in the "Next-Generation Solar Cell Commercialization Project". We develop technology. In order to verify the performance of perovskite solar cells, including installation methods and construction methods that take advantage of the lightness and flexibility that are the characteristics of perovskite solar cells, field verification will be conducted and, if necessary, improvements will be made based on the verification results.
