Enhanced efficiency of organic solar cells by using ZnO as an electron-transport layer. (14th December 2017)

• Record Type: Journal Article
• Authors: Ullah, Irfan; Shah, Said Karim; Wali, Sartaj; Hayat, Khizar; Khattak, Shaukat Ali; Khan, Aurangzeb
• Is Part Of: Materials research express. Volume 4:Number 12(2017)
• Publication Date: 2017-12-14
• Subjects: P3HT/PCBM blend -- ZnO electron-transport layer -- inverted organic solar cells; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/aa9dc9
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: This paper reports the use of ZnO, processed by sol-gel, as an efficient electron-transport layer for inverted organic photovoltaic cells. The device with incorporated ZnO interlayer, annealed at 100 °C, between transparent electrode and blend film plays an effective role in enhancing photovoltaic properties: the short-circuit current density ( J sc ) doubles while open-circuit voltage ( V oc ) and fill factor increase by 0.12 V and 10 %, respectively. Power conversion efficiency (PCE) of solar cell increases, approximately, three times. The improvement in the PCE is attributed to the presence of ZnO which, being an electron-facilitating layer, provides an energy step for charge collection at electrodes.