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Annual Review of Physical Chemistry

Volume 74, 2023

In Situ Measurement of Evolving Excited-State Dynamics During Deposition and Processing of Organic Films by Single-Shot Transient Absorption

Abstract

A significant advantage of organic semiconductors over many of their inorganic counterparts is solution processability. However, solution processing commonly yields heterogeneous films with properties that are highly sensitive to the conditions and parameters of casting and processing. Measuring the key properties of these materials in situ, during film production, can provide new insight into the mechanism of these processing steps and how they lead to the emergence of the final organic film properties. The excited-state dynamics is often of import in photovoltaic, electronic, and light-emitting devices. This review focuses on single-shot transient absorption, which measures a transient spectrum in a single shot, enabling the rapid measurement of unstable chemical systems such as organic films during their casting and processing. We review the principles of instrument design and provide examples of the utility of this spectroscopy for measuring organic films during their production.

Keyword(s): in situ spectroscopy, instrument design, molecular aggregation, organic thin film, thermal annealing, transient absorption
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/content/journals/10.1146/annurev-physchem-102722-041313
2023-04-24
2024-04-28
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In Situ Measurement of Evolving Excited-State Dynamics During Deposition and Processing of Organic Films by Single-Shot Transient Absorption
Annual Review of Physical Chemistry 74, 267 (2023); https://doi.org/10.1146/annurev-physchem-102722-041313
/content/journals/10.1146/annurev-physchem-102722-041313
/content/journals/10.1146/annurev-physchem-102722-041313
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