Superlattice deformation in quantum dot films on flexible substrates via uniaxial strain

• Published in: Nanoscale horizons Vol. 8; no. 3; pp. 383 - 395
• Main Authors: Heger, Julian E., Chen, Wei, Zhong, Huaying, Xiao, Tianxiao, Harder, Constantin, Apfelbeck, Fabian A. C., Weinzierl, Alexander F., Boldt, Regine, Schraa, Lucas, Euchler, Eric, Sambale, Anna K., Schneider, Konrad, Schwartzkopf, Matthias, Roth, Stephan V., Müller-Buschbaum, P.
• Format: Journal Article
• Language: English
• Published: England Royal Society of Chemistry 27.02.2023
• Subjects: Deformation; Emission; Energy transfer; Optoelectronics; Phase transitions; Photoluminescence; Photovoltaic cells; Quantum dots; Red shift; Solar cells; Strain; Substrates; Superlattices; Unit cell; X-ray scattering

The superlattice in a quantum dot (QD) film on a flexible substrate deformed by uniaxial strain shows a phase transition in unit cell symmetry. With increasing uniaxial strain, the QD superlattice unit cell changes from tetragonal to cubic to tetragonal phase as measured with in situ grazing-inciden...