Activation of Weak Monochromic Photocurrents by White Light Irradiation for Accurate IPCE Measurements of Carbon-Based Multi-Porous-Layered-Electrode Perovskite Solar Cells

• Main Authors: Ryuki TSUJI, Dmitry BOGACHUK, Bin LUO, David MARTINEAU, Eiji KOBAYASHI, Ryoto FUNAYAMA, Simone MASTROIANNI, Andreas HINSCH, Seigo ITO
• Format: Article
• Language: English
• Published: The Electrochemical Society of Japan 2020-09-01
• Series: Electrochemistry
• Subjects: perovskite solar cells; carbon-graphite electrode; mesoporous metal oxide; j–v and ipce measurement
• Online Access: https://www.jstage.jst.go.jp/article/electrochemistry/88/5/88_20-64074/_pdf/-char/en
• ISSN: 2186-2451

Variations in the time courses of the activation of fully-printable carbon-based multi-porous-layered-electrode perovskite solar cells (MPLE-PSCs) can lead to differences between the photocurrent density (Jsc) values obtained from one-sun photocurrent density-voltage (J–V) measurements and from incident-photon-to-current efficiency (IPCE) integration when using monochromic light. In the present work, the Jsc calculated from IPCE data was initially equal to half that obtained from one-sun J–V measurements. However, equivalent values were obtained when the J–V measurements were performed after 10 min of irradiation by a white light LED from the side of the device. This finding will be very important with regard to permitting accurate photovoltaic evaluation of MPLE-PSCs in the future.