Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Editor-in-Chief: Peter Gregory, Deputy Editors: Martin Ottmar, Carolina Novo da Silva, Lorna Stimson
Online ISSN: 1521-4095
Associated Title(s): Advanced Energy Materials, Advanced Engineering Materials, Advanced Functional Materials, Advanced Healthcare Materials, Advanced Materials Interfaces, Advanced Optical Materials, Particle & Particle Systems Characterization, Small
Materials Science Weekly Newsletter
Recently Published Articles
- Direct Observation of Doping Sites in Temperature-Controlled, p-Doped P3HT Thin Films by Conducting Atomic Force Microscopy
Duc T. Duong, Hung Phan, David Hanifi, Pil Sung Jo, Thuc-Quyen Nguyen and Alberto Salleo
Article first published online: 24 JUL 2014 | DOI: 10.1002/adma.201402015
The distribution of dopant sites in doped poly(3-hexylthiophene) (P3HT) thin films are characterized using optical absorption, grazing-incidence X-ray diffraction and conducting atomic force microscopy (c-AFM). It is shown that dopant sites can be directly observed using c-AFM and that the solution temperature dramatically impacts phase separation and conductivity in spin-cast films.
- Simple Fabrication of an Organic Laser by Microcontact Molding of a Distributed Feedback Grating
Sergej Hermann, R. Clayton Shallcross and Klaus Meerholz
Article first published online: 24 JUL 2014 | DOI: 10.1002/adma.201401616
Lasing from an organic polymer is demonstrated in a device utilizing a distributed feedback grating, manufactured by microcontact molding of CdSe nanocrystals (NCs) directly on top of the emitter layer. Besides the simpler fabrication in comparison to a reference device based on photolithographically-prepared DFB grating in a bottom dielectric layer, a much higher DFB strength for NC-gratings is observed, resulting in reduced lasing threshold and a fourfold differential lasing efficiency.
- Real-Time Manipulation with Magnetically Tunable Structures
Yangying Zhu, Dion S. Antao, Rong Xiao and Evelyn N. Wang
Article first published online: 22 JUL 2014 | DOI: 10.1002/adma.201401515
Magnetically tunable micropillar arrays with uniform, continuous and extreme tilt angles for real-time manipulation are reported. We experimentally show uniform tilt angles ranging from 0° to 57°, and develop a model to accurately capture the behavior. Furthermore, we demonstrate that the flexible uniform responsive microstructures (μFUR) can dynamically manipulate liquid spreading directionality, control fluid drag, and tune optical transmittance over a large range.
- Electronic Readout Enzyme-Linked Immunosorbent Assay with Organic Field-Effect Transistors as a Preeclampsia Prognostic
Mallory L. Hammock, Oren Knopfmacher, Tse Nga Ng, Jeffrey B.-H. Tok and Zhenan Bao
Article first published online: 22 JUL 2014 | DOI: 10.1002/adma.201401829
Organic field-effect transistor (OFET) sensors can meet the need for portable and real-time diagnostics. We demonstrate an electronic readout enzyme-linked immunosorbent assay using OFETs for the detection of a panel of three biomarkers in complex media to create a pre-eclampsia prognostic. We also demonstrate biodetection utilizing a fully inkjet printed and flexible OFET to underscore our ability to produce disposable devices.
- Mobility Guidelines for High Fill Factor Solution-Processed Small Molecule Solar Cells
Christopher M. Proctor, John A. Love and Thuc-Quyen Nguyen
Article first published online: 22 JUL 2014 | DOI: 10.1002/adma.201401725
Analysis of measured charge carrier mobilities and fill factors in solution processable small molecule bulk heterojunction solar cells reveals that in order to achieve high FF, hole and electron mobilities must be >10−4 cm2/Vs. Neat film mobility measurements are also found to be a useful predictor of the maximum blend film mobility and FF obtained in blend film solar cells.