To Spin or Not to Spin?-Is Spin-Coating the Ideal Technique for Pre-Deposition of Sodium Fluoride for CIGS Rear Surface Passivated Ultrathin Solar Cells?

Article Physics, Applied

Novel cost-effective approach to produce nano-sized contact openings in an aluminum oxide passivation layer up to 30 nm thick for CIGS solar cells

Iryna Kandybka et al.

Summary: A novel method of creating local contact openings in an aluminum oxide passivation layer for ultra-thin CIGS solar cells through selenization of LiF salt is introduced, showing potential cost-effectiveness and environmental friendliness. This method allows for nano-sized openings with homogeneous distribution in thick Al2O3 layers and has potential for improving current collection and external quantum efficiency response in passivated CIGS solar cells. Optimization of the process is needed for wider application in production.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2021)

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Article Energy & Fuels

Solar cell efficiency tables (Version 58)

Martin A. Green et al.

Summary: This article presents consolidated tables showing the highest confirmed efficiencies for solar cells and modules, along with guidelines for inclusion of results and a review of new entries since January 2021.

PROGRESS IN PHOTOVOLTAICS (2021)

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Article Energy & Fuels

Detrimental Impact of Na Upon Rb Postdeposition Treatments of Cu(In,Ga)Se2 Absorber Layers

Jessica de Wild et al.

Summary: The study investigates the passivation of the Cu(In,Ga)Se-2 (CIGS)/Mo back contact using AlOx to reduce recombination at the interface. It was found that the postdeposition treatment using RbF deteriorates performance due to the formation of an injection barrier at the front and reduced acceptor concentration. Analysis with time-of-flight secondary ion mass spectroscopy revealed higher Na concentration at the AlOx/Mo back contact.

SOLAR RRL (2021)

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Article Energy & Fuels