# Kinetics of the photochromic effect in oxygen-containing rare-earth hydrides

Source: [Kinetics of the photochromic effect in oxygen-containing rare-earth hydrides](<https://www.sota2.com/research/paper/68fa4c081e209131ce94a117>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T08:36:05.165Z

Authors: Dmitrii Moldarev, Tuan T. Tran, Max Wolff, Daniel Primetzhofer

Published: 2025-09-30T07:28:43.000Z

## Abstract

The kinetics of the photochromic reaction of oxygen-containing rare-earth hydrides is commonly described by an exponential function assuming a single-step process. In this paper, we elaborate on the origin of the photochromic effect in oxygen-containing rare-earth metal hydrides, considering the kinetics of the reaction as a two-step process. We show that the fit to the experimental data is improved drastically when two processes that cause the photodarkening are assumed: a fast reaction rate-limited - for example, electronic or local - process and a slow, e.g. diffusion-limited process.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2509.25887>)

[PDF](<https://arxiv.org/pdf/2509.25887.pdf>)