Core Viewpoint - The research team from Nanjing University of Posts and Telecommunications has successfully developed a large-area "copper zinc tin sulfur selenium" photovoltaic film with a power conversion efficiency of 10.1%, indicating the industrialization potential of inorganic flexible photovoltaic materials [1][5]. Group 1: Research Background - The first generation of photovoltaic materials, crystalline silicon, is rigid, while current research focuses on making photovoltaic materials flexible and lightweight, even capable of being sewn into clothing [1]. - New generation photovoltaic materials like perovskite can be made into thin films but suffer from instability in performance. In this context, the second generation material "copper indium gallium selenide" has regained attention from researchers [2]. Group 2: Development Process - Due to low yield rates and high costs of indium and gallium, the research team replaced these elements with zinc and tin, using a solution method instead of traditional vacuum methods to create a 0.1 cm² "copper zinc tin sulfur selenium" photovoltaic film with a power conversion efficiency of 13% [2]. - The team discovered that as the film area increased beyond 10 cm², the power conversion efficiency significantly decreased due to the premature formation of a dense crystalline layer on the film's surface, blocking selenium infiltration [2]. - After over four years of research, the team optimized the solution formulation to enhance the film's porosity and structure, allowing for better selenium penetration and resulting in a photovoltaic component with an effective area of 10.48 cm² [2]. Group 3: Testing and Implications - The photovoltaic component was tested by an international authority, achieving a power conversion efficiency of 10.1%, and was officially included in the international "Solar Cell Efficiency Table" [5]. - The advantages of the "copper zinc tin sulfur selenium" technology route include abundant raw material reserves, non-toxicity, and low costs, marking a significant step towards the theoretical and practical feasibility of industrializing inorganic flexible photovoltaic materials [5].

Group 1 - The company Zhejiang Zhongjing Technology Co., Ltd. has completed the registration of changes in its registered capital and the revision of its Articles of Association [1] - The company held the ninth meeting of the fourth board of directors and the annual general meeting on April 28 and May 20, 2025, respectively, to approve the changes [1] - The new registered capital of the company is 129,619,000 yuan [1] Group 2 - The company has obtained a new business license from the Zhejiang Provincial Market Supervision Administration, with updated information including its unified social credit code and legal representative [1] - The company was established on January 25, 2010, and operates in the manufacturing and sales of crystalline silicon and electronic components, among other activities [1] - The company's registered address is No. 59, Luhui Road, Taihu Street, Changxing County [1]