20,935 research outputs found
Integrated Sensors to Experimentally Measure Microheater Uniformity: Geometry Implications in Meander-Based Structures
No full textThis work was supported by the Research Foundation Flanders (FWO Vlaanderen) for funding in the research project under Grant G087422N
High mobility n-type organic thin film transistors of PTCDI grown by organic vapor phase deposition
No full textCarrier Mobility, Lifetime, and Diffusion Length in Optically Thin Quantum Dot Semiconductor Films
No full textWe propose a method to measure the fundamental parameters that govern diffusion transport in optically thin quantum dot semiconductor films and apply it to quantum dot materials with different ligands. Thin films are excited optically, and the profile of photogenerated carriers is modeled using diffusion-based transport equations and taking into account the optical cavity effects. Correlation with steady-state photoluminescence experiments on different stacks comprising a quenching layer allows the extraction of the carrier diffusion length accurately from the experimental data. In the time domain, the mapping of the transient PL data with the solutions of the time-dependent diffusion equation leads to accurate calculations of the photogenerated carrier mobility. These findings allow the estimation of the speed limitations for diffusion-based transport in QD absorbers.sponsorship: The results reported in this paper have been realized with the funding of Agentschap Innoveren & Ondernemen (VLAIO) in the framework of project MIRIS (IWT/150029). (Agentschap Innoveren & Ondernemen (VLAIO)|IWT/150029)status: Publishe
The impact of molecular orientation on the photovoltaic properties of a phthalocyanine/fullerene heterojunction
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