DataVXACS Applied Materials & InterfacesPaper
journal article·2024-08-14

Direct Laser Writing Crystal Polymorphs of Organic Semiconductors for Phase Change Electronics

Daniel William Davies, Sanghyun Jeon, Giorgio Graziano, Bijal B. Patel, Wuyue Liu, Joseph Strzalka, Xiaozhang Zhu, Ying Diao

ACS Applied Materials & Interfaces· Volume 16· Issue 32
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Source abstract

Abstract

The many diverse polymorphic behaviors observed in organic electronic materials offer opportunities to modulate electronic properties through reversibly switching crystal structures. Here, we access the prolific polymorphism observed in two-dimensional quinoidal terthiophene via laser writing to locally heat and direct the phase transitions. We access a metastable polymorph IV through rapid cooling and observe distinct symmetry as well as packing through grazing incidence X-ray diffraction (GIXD). Using our open-source PolyChemPrint patterning platform, we direct laser heating to initiate the IV-I transition, switching the conductance by >2 orders of magnitude. This is confirmed via a combination of GIXD and Raman spectroscopy. Finally, we demonstrate switching of transistor devices as well as discrete tuning of conductance via laser writing.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Advanced Memory and Neural Computing · Perovskite Materials and Applications · Photoreceptor and optogenetics research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States

Department Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States

Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States

Beckman Institute for Advanced Science and Technology, 405 N. Mathews Ave. M/C 251, Urbana, Illinois 61801, United States

Funding

Alfred P. Sloan Foundation · DuPont · Office of Science · National Natural Science Foundation of China · National Science Foundation

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