关键词: 清洁技术, 跨界污染, 创新, 微分博弈

Abstract: Taking clean technology levels as an endogenous variable, this paper investigates a differentia game between two symmetric countries for clean technology innovation with technology overflow. In this model, participating countries can improve the quality of clean technology in two ways——investing in clean technology themselves or waiting for the spillover of innovation investment from each other. Strategic space the two countries can choose includes non-cooperative and cooperative strategies. The results demonstrate that the intensity of technology spillover has a negative impact on participating countries' technology investment and technology level. Compared with non-cooperation, the cooperation of transboundary pollution control enables countries to obtain cleaner technologies and higher social welfare at a lower cost.

Key words: clean technology, transboundary pollution, innovation, differentia game