Nandang Mufti, Siti Maryam, Anisa Fitri Muyasaroh, Ahmad Taufiq, Sunaryono Sunaryono
In this work, the suppression of the interfacial traps by gel polymer electrolyte (GPE) interface passivation of the NiO hole transport layer in normal mesoscopic perovskite solar cells is achieved. The GPE material was chosen based on the NiO and perovskite surfaces passivation with a conductivity of polyacrylonitrile (PAN) polymer where the conductivity of PAN-GPE was about 2.46 mS.cm-1. The device configuration used in this work was FTO/TiO2/CH3NH3PbI3/NiO/PAN/Pt. The effects of GPE passivation and NiO coating were investigated. The passivation effect of the GPE layer is shown as higher device efficiency compares to only NiO-based devices. By coating the GPE layer on the NiO layer, the device shows better operational stability after three times measurement with only a 4 % decrement of its initial efficiency. In contrast, the device without the NiO layer decreased up to 60 % of its initial performance. The EIS analysis confirms the GPE passivation effect. Interestingly, this is the first-time study employed low-temperature NiO as HTL with GPE passivation in the normal n-i-p mesoscopic structure of PSCs. © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia
