Tunable Self-Assembling Organic-Inorganic Quantum Wells
May 16, 2019
Films deposited by resonant-infrared matrix-assisted pulsed laser evaporation (RIR-MAPLE) enable transient absorption spectroscopy measurements on oligothiophene-based lead halide perovskites, providing a critical window into excited state dynamics and validating hybrid density functional theory predictions of quantum well alignment between the various inorganic/organic moieties.
Scientific Achievement
We show uniquely versatile excited-state behavior in complex hybrid perovskite quantum-well systems, prepared using resonant-infrared matrix-assisted pulsed laser evaporation.
Significance and Impact
The work demonstrates a new paradigm of combining theoretical modeling, organic synthesis, RIR-MAPLE, and spectroscopy in the rational design and tuning of complex hybrid perovskites.
Research Details
- Density functional theory predicts organic-inorganic energy level alignment and guides synthesis
- Organic synthesis provides targeted organics for the hybrid
- RIR-MAPLE enables depositing the complex hybrid films
- Unique photophysics from targeted energy-level alignment is revealed using transient absorption spectroscopy
DOI: 10.1039/c9mh00366e
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Volker Blum
Duke University
Wei You
University of North Carolina, Chapel Hill
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David Mitzi
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