Numerical modeling and investigation of material mixing and utilization during organic vapor phase deposition
Source abstract
Abstract
Organic vapor phase deposition (OVPD) is a promising technique for cost-effective manufacture of organic electronic devices. The ability to evenly mix different vapor streams prior to depositing doped emissive layers on the substrate, while maximizing utilization of the source materials is crucial for manufacturing organic light-emitting devices (OLEDs) intended for general lighting. In this work, we numerically and experimentally investigate how process conditions affect critical manufacturing metrics, including vapor mixing, material utilization, and substrate heating during organic vapor deposition. Our results show that hardware aspect ratio needed to achieve effective vapor mixing can be predetermined from vapor transport analyses. We also show that in a diffusion-limited deposition regime, the material utilization efficiency (MUE) is independent of organic vapor concentration and that the ratio of substrate to chamber cross-sectional areas drives MUE. We therefore propose guidelines for the design of OVPD reactors that can deliver > 75% MUE.Graphical abstractSummary illustrating relationship between OVPD conditions, design strategies and studied performance parameters
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing and 3D Printing Technologies · Metal and Thin Film Mechanics · Copper Interconnects and Reliability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
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