Amid the influence of COVID-19, it is a great success of EMP20 in Yangon, Myanmar. Now, EMP21 will be held in Kunming, China. The aim of this conference is to provide a platform for academics, scientists, business leaders, innovators, and industrialists around the world to exchange ideas and form collaborations to jointly fight energy crisis, and combat global warming and climate change. In particular, we solicit papers in a broad area of energy photonics, an emerging area in applying photonics in high efficiency energy production, utilization, and related material researches supporting these applications. EMP21 covers all aspects of Material and Photonics in Energy applications including but not limited to:

-   Energy & Energy Storage materials

-   Solar cells

-   Smart windows and coating

-   Nanomaterials, Functional Materials and Devices

-   Semiconductor lighting and displays

-   Optics & Photonics