Elucidating the Advancement in the Optoelectronics Characteristics of Benzoselenadiazole-Based A2-D-A1-D-A2-Type Nonfullerene Acceptors for Efficient Organic Solar Cells - Hira Naz; Muhammad Adnan; Zobia Irshad; Riaz Hussain; Hany W. Darwish; Mahmood Ahmed (ACS Omega)