n‐Type Organic Semiconductors in Organic Electronics

Abstract

Organic semiconductors have been the subject of intensive academic and commercial interest over the past two decades, and successful commercial devices incorporating them are slowly beginning to enter the market. Much of the focus has been on the development of hole transporting, or p-type, semiconductors that have seen a dramatic rise in performance over the last decade. Much less attention has been devoted to electron transporting, or so called n-type, materials, and in this paper we focus upon recent developments in several classes of n-type materials and the design guidelines used to develop them.

Roll‐Coated Fabrication of Fullerene‐Free Organic Solar Cells with Improved Stability

“…Fullerene‐free OSCs (FF‐OSCs)9, 14, 15, 16, 17, 18, 19, 20 are composed of a p‐type semiconducting polymer or small molecule as an electron donor and an n‐type semiconducting nonfullerene polymer or small molecule as an electron acceptor. Compared with fullerene acceptors, nonfullerene acceptors present some advantages, such as broad and strong absorption, adjustable LUMO energy levels, and long‐term stability.…”

Organic Semiconductor Nanoparticle Film: Preparation and Application

“…The mixture was put into a quartz cuvette, stirred vigorously with a magnetic stirrer, and then simultaneously exposed to the second harmonic of a nanosecond YAG laser. The spot area was approximately tens of mm 2 , and the laser intensity was adjusted using a polarizer. The laser ablation mechanism for nanosecond laser ablation is based on photothermalization.…”

“…So they can serve as attractive candidates for applications in bio/chemical sensors and optoelectronic devices. 1,2 To meet the requirement of domains including information, energy and healthcare, nanoscale materials have emerged as new building blocks for optoelectronic devices, bioimaging agents, and drug delivery carriers in recent years. 3  5 These nanomaterials especially nanoparticles have already shown great potential to offer exciting opportunities in these areas.…”

Anisotropic Charge Transport in Bisindenoanthrazoline-Based n-Type Organic Semiconductors

“…21−23 To our knowledge, the mobility of hole or electron is increased in solid-state organic semiconductor when the intermolecular π orbital overlap is maximized. 24 From both a fundamental and practical point of view, it is essential to understand the relationship between the hole or electron transport and molecular packing in the crystal structure.…”