Observation of Excitonic Doublet Structure, Biexcitons and Their Temperature Dependence in High-Quality β-InSe Single Crystals. - Huong, Tran Thi Thu; Le, Long V.; Loan, Nguyen Thu; Nam, Man Hoai; Nguyen, Tien-Thanh; Tran, Thi Thuong Huyen; Thuy, Ung Thi Dieu; Nguyen, Thi Huong; Kim, Tae Jung (Materials (1996-1944), 2025)