Defect Passivation via a Graded Fullerene Heterojunction in Low-Bandgap Pb–Sn Binary Perovskite Photovoltaics

• Published in: ACS energy letters Vol. 2; no. 11; pp. 2531 - 2539
• Main Authors: Rajagopal, Adharsh, Liang, Po-Wei, Chueh, Chu-Chen, Yang, Zhibin, Jen, Alex K.-Y
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 10.11.2017; American Chemical Society (ACS)
• Subjects: Chemistry; Electrochemistry; Energy & Fuels; Materials Science; Science & Technology - Other Topics

Development of low-bandgap (∼1.2 eV) Pb–Sn binary perovskites is exciting and has recently gained immense attention because of their high photovoltages, lowered Pb toxicity, and pivotal role in realizing perovskite tandem solar cells. Defect passivation in this class of perovskite alloys has immense...