LLNL-LDRD-Final report

Yan, Y.

doi:10.2172/2476149

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DOE OSTI · 2476149

LLNL-LDRD-Final report

Yan, Y.

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Abstract

The main focus of this study is the X-ray spectroscopy and complementary modeling characterization of the range of perovskite materials. Specific areas covered in this study include: • Quantitative characterization of individual (both CB and VB) band edge movement as a function of Sn concentration; • The effects of creating an interface with the charge transport layer and back contact on both the interfacial bonding and unoccupied band structure – i.e., how does the interfacial eDOS evolve when the interface is assembled; • How does this interface change (local bonding, CB edge) evolve with degradation – this includes depth profiling; • Additional insights from the spectroscopy – e.g., the pathway of degradation (Sn(II) oxide formation to a significant depth before Sn(IV) oxide formation, etc.), do different charge transport layers have distinct properties in slowing degradation, etc.

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14 SOLAR ENERGY 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

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Yan, Y.. 2024-10-31. LLNL-LDRD-Final report. https://doi.org/10.2172/2476149

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