일본 최대의 공공 연구 기관 중 하나인 국립산업과학기술총합연구소(AIST)는 일본 산업과 사회에 유용한 기술 창출과 실질적인 실현, 그리고 혁신적인 기술의 격차를 '연결'하는 데 중점을 두고 있다. 

National Institute of Advanced Industrial Science and Technology (AIST) 日本語News listA researcher at AIST has developed a technology to improve the photovoltaic efficiency of wide-bandgap CIS-type thin-film solar cells that do not contain the rare metal indium. For tandem-type solar cells, which are expected to achieve even higher performance than the solar cells currently in widespread use, the development of top cell materials for short-wavelength light absorption that satisfy all the elements of "low cost," "high performance," and "high reliability (stability)" has been a challenge. In this study, we developed a technology to improve the quality of photo-absorber layers with a wide bandgap energy, which is particularly suitable as a top cell among CIS-type compounds, a promising material group that satisfies these elements. The newly developed photo-absorber layer has excellent stability and is expected to be applied to inexpensive, high-performance, and flexible tandem-type solar cells in the future. from WWW.AIST.GO.JP