[Cao, Fangcheng; Wang, Hongqing; Zhang, Ye; Zhang, Y] Univ South China, Sch Chem & Chem Engn, Lab Optoelect Technol Low Dimens Nanomat, Hengyang 421001, Peoples R China.
[Zhang, H; Khan, Karim; Tareen, Ayesha Khan; Zhang, Han] Shenzhen Univ, Coll Phyiscs & Optoelect Engn, Shenzhen Engn Lab Phosphorene & Optoelect, Shenzhen 518060, Peoples R China.
[Qian, Wenjing] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China.
[Agren, Hans; Agren, H] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden.