Stretched Polymer Molecular Film for Photo-Electronic Efficiency
Solution Overview
Problem
Conventional polymer molecular films used in photo-electronic elements, such as PLEDs and solar cells, have limited light-emitting and power-generating efficiency, which hinders their widespread application.
Innovation Solution
A polymer molecular film with a stretched molecular structure is formed on a substrate through a deformation process, either by heating the polymeric material layer above its glass transition temperature or by exposing it to solvent vapor, resulting in a film with protrusion and indentation areas that enhance charge mobility and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional polymeric materials are used in photo-electronic elements, then the fabrication process is simple and material cost is low, but the light-emitting and power-generating efficiency is limited
Solution Approach 1:
The patent applies parameter changes by heating the polymeric material layer above its glass transition temperature or exposing it to solvent vapor, which transforms the molecular conformation from coiled to stretched state. This physical parameter change enhances charge carrier mobility and light-emitting efficiency by one order of magnitude while maintaining the simplicity of the fabrication process.
2Productivity
If the polymeric material layer is heated above glass transition temperature or exposed to solvent vapor, then the molecular structure becomes stretched and efficiency increases, but additional processing steps are required
Solution Approach 1:
The patent utilizes phase transitions by heating the polymeric material above its glass transition temperature, causing a transition from a rigid to a flexible state that enables molecular stretching. Alternatively, solvent vapor exposure induces a plasticizing effect that achieves similar molecular conformation changes. These phase transition-based approaches enhance efficiency while adding minimal processing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method significantly increases light-emitting and power-generating efficiency by up to one order of magnitude, making the polymer molecular films more suitable for various photo-electronic applications without significant increases in time or cost.
Implementation Method 1
heating the polymeric material layer until the temperature is higher than glass transition temperature of the conjugated polymeric materials
Implementation Method 2
disposing the polymeric material layer in vapor of a solvent
Data Source
AI summary
The present invention provides a polymer molecular film, a photo-electronic element comprising the same and method for manufacturing the same. The polymer molecular film of the invention is formed via a deformation process on a substrate. Particularly, the polymer molecular film includes a plurality of conjugated polymers, therein at least one of the conjugated polymers has a stretched molecular structure. As a result, the photo-electronic element having said polymer molecular film performs with good lighting or power generating efficiency.