Doping High‐Mobility Donor–Acceptor Copolymer Semiconductors with an
In contrast, organic semiconductor materials, due to the attractive advantages of light-weight, flexibility, and low-cost processing methods, have become a focus in many research fields over the past few decades, such as organic light-emitting diodes (OLEDs), 11 organic field-effect transistors (OFETs), 12 and organic photovoltaics (OPVs). 13 Organic semiconductors have also gained intensive
Recent Advances in Molecular Doping of Organic Semiconductors
1. Introduction. Semiconductors are an indispensable building block in the modern electronic industry. Organic semiconductors, i.e., π-conjugated polymers and small molecules, which were first discovered in the late 1940s [1], display distinct advantages against their inorganic counterparts in terms of low-cost, light-weight, wide variety, easy solution-processed manufacturing as well as
Understanding the Double Doping of Organic Semiconductors Via State
The double ionization of molecular dopants enables the doping efficiency (free charges per dopant molecule) to rise above 100%. However, the current models of doped organic semiconductors based on Fermi–Dirac statistics fail to explain the double ionization of dopants and also the analogous situation of bipolaron formation on a host polymer.
Doping Approaches for Organic Semiconductors | Chemical Reviews
Electronic doping in organic materials has remained an elusive concept for several decades. It drew considerable attention in the early days in the quest for organic materials with high electrical conductivity, paving the way for the pioneering work on pristine organic semiconductors (OSCs) and their eventual use in a plethora of applications. Despite this early trend, however, recent strides
Toward emerging gallium oxide semiconductors: A roadmap
Mist-CVD is a low-cost, ambient-pressure CVD system that has obvious advantages for the growth of oxide semiconductors. Sn-doped (010) β-Ga 2 O 3 epilayers grown by mist-CVD exhibited a concentration of 1 × 10 18 cm 3 at a Hall mobility of 45 cm 2 /V·s, demonstrating the potential of mist-CVD in the fabrication of β-Ga 2 O 3 power
- What is a doped semiconductor?
- In semiconductor production, doping is the intentional introduction of impurities into an intrinsic (undoped) semiconductor for the purpose of modulating its electrical, optical and structural properties. The doped material is referred to as an extrinsic semiconductor.
- Why are doping techniques important for doped organic semiconductors?
- Other than the category of molecular dopants, the doping techniques of the dopants are also crucial for the properties of doped organic semiconductors since the solid-state features (e.g., nano-/microstructure and domain size) of thin film are highly dependent on the processing methods .
- When did doping occur in organic semiconductors?
- The doping of organic semiconductors can date back to 1970s when the conductivity of organic materials is largely increased by adding the admixture of halides and alkali metals , including both conjugated small molecules and polymers.
- What is doping in microelectronics?
- In fundamental microelectronics, doping is a fabrication technique that can intentionally introduce impurities into a host semiconductor so that its structural, optical and electrical properties can be controllably tuned.
- Are extrinsic semiconductors doped?
- Although numerous reports of doped materials have been made within the recent years, the behavior and characteristics of extrinsic semiconductors have not been fully clarified because the properties of each of them change depending on the nature of the doping, the concentration, and the size of the particles.
- Does a low doping concentration affect the performance of organic semiconductors?
- However, as also mentioned, the doping efficiency in organic semiconductors is quite low (usually below 5%), thus low doping concentration will have no evident impact on performance improvement. The appropriate doping ratio employed in organic semiconductors is actually one of the challenges in the field.
