Use of benzothiophene ring to improve the photovoltaic efficacy of cyanopyridinone-based organic chromophores: a DFT study - Shafiq, Iqra; Khalid, Muhammad; Maria, Gul; Raza, Nadeem; Braga, Ataualpa Albert Carmo; Bullo, Saifullah; Khairy, Mohamed (RSC Advances, 2024)