Event Title

Shape-Engineered Semiconducting Organic Single-Crystals

Co-Author(s)

Griffin Reed, Cyrus Schaaf

Research Mentor(s)

David Patrick

Description

The ability to process single-crystal inorganic semiconductor materials such as c-Si into complex 2D and 3D microarchitectures has enabled countless important technological innovations, from integrated circuits, to solid-state optical devices and micro-electro-mechanical systems. For single-crystal organic semiconductors on the other hand, comparable approaches to defining micron- and submicron-scale structure are comparatively nonexistent. Here we describe a new bottom-up crystal growth strategy enabling a comparable level of control in organic single-crystals, grown into intricate terminal shapes by design. Crystal shape is controlled using a 2-dimensional vapor-liquid-solid deposition technique on substrates patterned with micron-scale obstructions, causing crystals to adopt shapes and growth directions accommodating the obstructions. After growth is complete, patterned crystals can be released from the substrate. The successful development of methods for programming bottom-up growth of molecular single-crystals with geometries approaching the complexity of micropatterned inorganic solids could open the door to new generations of molecular devices with tailored electronic, optical, photonic and other properties.

Document Type

Event

Start Date

May 2018

End Date

May 2018

Location

Chemistry

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.

Language

English

Format

application/pdf

This document is currently not available here.

Share

COinS
 
May 16th, 12:00 PM May 16th, 3:00 PM

Shape-Engineered Semiconducting Organic Single-Crystals

Chemistry

The ability to process single-crystal inorganic semiconductor materials such as c-Si into complex 2D and 3D microarchitectures has enabled countless important technological innovations, from integrated circuits, to solid-state optical devices and micro-electro-mechanical systems. For single-crystal organic semiconductors on the other hand, comparable approaches to defining micron- and submicron-scale structure are comparatively nonexistent. Here we describe a new bottom-up crystal growth strategy enabling a comparable level of control in organic single-crystals, grown into intricate terminal shapes by design. Crystal shape is controlled using a 2-dimensional vapor-liquid-solid deposition technique on substrates patterned with micron-scale obstructions, causing crystals to adopt shapes and growth directions accommodating the obstructions. After growth is complete, patterned crystals can be released from the substrate. The successful development of methods for programming bottom-up growth of molecular single-crystals with geometries approaching the complexity of micropatterned inorganic solids could open the door to new generations of molecular devices with tailored electronic, optical, photonic and other properties.