Recent Progress in Organic Electronics:  Materials, Devices, and Processes

Abstract

Research in organic electronics has included advances in materials, devices, and processes. Device architectures, increasingly complex circuitry, reliable fabrication methods, and new semiconductors are enabling the incorporation of organic electronic components in products including OLED displays and flexible electronic paper.

Van Der Waals Heterostructures between Small Organic Molecules and Layered Substrates

“…The average step height of~1.5 nm, close to the length of one pentacene molecule, suggests that pentacene molecules always stand up on SiO 2 (molecular a-b plane parallel to the substrate surface) as shown in Figure 2d, which can be attributed to the relatively weak interfacial interaction between pentacene and SiO 2 . Consequently, the charge carriers in such pentacene thin films prefer to lateral transport along the overlapped π orbitals with high mobilities up to 5 cm 2 /Vs [33]. However, the existed plenty of grain boundaries may scatter the charge carriers and reduce the mobilities.…”

Modification of ITO surface using aromatic small molecules with carboxylic acid groups for OLED applications

“…Interest on organic light-emitting device (OLED) has been grown progressively during the last decade due to their potential applications as commercial devices in organic electronics [1][2][3][4][5]. The interfacial phenomenon such as poor adhesion [6] is an important parameter in the performance and stability of an OLED device.…”

Barrier Formation at Organic Interfaces in a Cu(100)-benzenethiolate-pentacene Heterostructure

“…The energy level alignment at organic-organic (OO) and metal-organic (MO) interfaces is a crucial physical property determining the behavior of advanced molecular devices [1][2][3]. Considerable effort has been devoted to pentacene (C 22 H 14 ), due to its efficiency as an active layer in organic thin film transistors (OTFTs) [4,5] for having high charge carrier mobility at room temperature (RT) [5,6]. Recently, self-assembled monolayers (SAMs) [7][8][9] have been used as buffer layers to obtain pentacene with standing-up orientation, by suppressing the direct interaction between the pentacene molecules and the metal substrate, reducing the gate-voltage and enhancing the on/ off ratio in OTFTs [8,10].…”