Impact of Ag content on device properties of Cu(In,Ga)Se2 solar cells

Article Nanoscience & Nanotechnology

Alkali Dispersion in (Ag,Cu)(In,Ga)Se2 Thin Film Solar Cells-Insight from Theory and Experiment

Hisham Aboulfadl et al.

Summary: Through experimental and theoretical studies, it has been found that there is a clear trend of increased alkali bulk solubility with the silver concentration in Cu(In,Ga)Se-2 absorbers, which can enhance the performance of photovoltaic devices.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Energy & Fuels

Silver-Promoted High-Performance (Ag,Cu)(In,Ga)Se2 Thin-Film Solar Cells Grown at Very Low Temperature

Shih-Chi Yang et al.

Summary: This study explores the potential of producing high-efficiency solar cells at low temperatures (<=450 degrees C) by alloying CIGS with Ag to form ACIGS solar cells, which achieved an efficiency of 20.1%. Minimal efficiency degradation was observed for ACIGS absorbers deposited at lower temperatures, in contrast to more significant degradation in CIGS devices. Advanced characterization techniques revealed that the improved morphology, reduced tail states, and higher doping density in ACIGS absorbers were the key factors contributing to the higher efficiency of ACIGS devices compared to CIGS devices.

SOLAR RRL (2021)

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Article Materials Science, Multidisciplinary

Challenges in the deposition of (Ag,Cu)(In,Ga)Se2 absorber layers for thin-film solar cells

Stephanie Essig et al.

Summary: Partially substituting Cu by Ag in Cu(In,Ga)Se-2 thin-film solar cells is strategically interesting for achieving smooth devices with high conversion efficiencies. However, challenges such as the formation of deep crevices and voids, as well as the distortion of desired bandgap grading due to Ag content variations, need to be addressed for industrial exploitation. Successful optimization of the deposition process conditions can lead to the fabrication of smooth (Ag,Cu)(Ga,In)Se-2 films with cell efficiencies up to 20.5%.

JOURNAL OF PHYSICS-MATERIALS (2021)

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Article Chemistry, Physical