Highly Efficient and Uniform 1 cm2 Perovskite Solar Cells with an Electrochemically Deposited NiO_x Hole‐Extraction Layer

Citations Over TimeTop 10% of 2017 papers

Abstract

Given that the highest certified conversion efficiency of the organic-inorganic perovskite solar cell (PSC) already exceeds 22 %, which is even higher than that of the polycrystalline silicon solar cell, the significance of new scalable processes that can be utilized for preparing large-area devices and their commercialization is rapidly increasing. From this perspective, the electrodeposition method is one of the most suitable processes for preparing large-area devices because it is an already commercialized process with proven controllability and scalability. Here, a highly uniform NiO_x layer prepared by electrochemical deposition is reported as an efficient hole-extraction layer of a p-i-n-type planar PSC with a large active area of >1 cm2 . It is demonstrated that the increased surface roughness of the NiO_x layer, achieved by controlling the deposition current density, facilitates the hole extraction at the interface between perovskite and NiO_x , and thus increases the fill factor and the conversion efficiency. The electrochemically deposited NiO_x layer also exhibits extremely uniform thickness and morphology, leading to highly efficient and uniform large-area PSCs. As a result, the p-i-n-type planar PSC with an area of 1.084 cm2 exhibits a stable conversion efficiency of 17.0 % (19.2 % for 0.1 cm2 ) without showing hysteresis effects.

Related Papers

• → Direct formation of I3- ions in organic cation solution for efficient perovskite solar cells(2018)35 cited
• → High-Valent Iodoplumbate-Rich Perovskite Precursor Solution via Solar Illumination for Reproducible Power Conversion Efficiency(2021)20 cited
• → High performance flexible perovskite solar cell with large area via one-step solution process(2019)4 cited
• → Simultaneous Incorporation of CsI in the Two‐step Deposition Process Boosts the Power Conversion Efficiency and Stability of Perovskite Solar Cells(2023)4 cited
• → Quinoxaline‐Based Materials That Exhibit a Significant Passivation Effect and Lead to the Enhancement in the Power Conversion Efficiency of Perovskite Solar Cells(2023)2 cited