1. School of Internet of Things, Jiangnan University, Wuxi, Jiangsu, China
2. Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology, Wuxi, Jiangsu, China
3. School of Science, Jiangnan University, Wuxi, Jiangsu, China
4. Wuxi Suntech Power Co., Ltd., Wuxi, Jiangsu, China