Transferable Printed Electrode on Release Substrate for Layer Protection
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Solution Overview
Problem
Existing methods for forming electrodes in flexible electronic devices, such as thin-film photovoltaic devices, face challenges including the use of expensive and low-throughput vacuum evaporation techniques, and the potential for damage to underlying layers due to heat treatment and solvent leaching during solution printing.
Innovation Solution
A transferrable electrode arrangement comprising a flexible release substrate with a release surface and a transferrable electrode having at least one conductive layer, including an interfacing conductive layer that can be carbonaceous or organic, allowing the electrode to be fabricated separately and transferred onto an electronic carrier substrate without exposing it to heat treatment or solvent issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vacuum evaporation deposition is used to form the top electrode, then electrode performance and purity are improved, but manufacturing cost increases and productivity decreases
Solution Approach 1:
The electrode formation process is segmented into two independent stages: (1) forming the conductive layer on the release substrate using solution processing, and (2) transferring the completed electrode to the photovoltaic device. This segmentation allows the release substrate to serve as a separate fabrication platform, enabling high-throughput solution processing without compromising the underlying device layers.
Solution Approach 2:
The release substrate acts as an intermediary carrier that temporarily holds the conductive layer during fabrication. It mediates between the solution processing method (high throughput, low cost) and the final device application (requiring high performance), allowing the conductive layer to be formed with desirable properties before being transferred to the photovoltaic device.
2Productivity
If solution printing/coating is used to form the electrode, then manufacturing cost decreases and productivity increases, but heat treatment and solvent leaching cause damage to underlying layers
Solution Approach 1:
The fabrication process is divided into separate stages on different substrates. The conductive layer is formed on the release substrate using solution processing with heat treatment, while the photovoltaic device layers are prepared separately. This spatial segmentation prevents the harmful effects of heat and solvents from reaching the underlying device layers.
Solution Approach 2:
The release substrate serves as a protective intermediary that isolates the photovoltaic device layers from the harmful heat treatment and solvent leaching processes. The conductive layer is processed on this intermediary substrate, which absorbs the thermal and chemical stresses, then the completed electrode is transferred to the device without exposing the sensitive layers to damage.
3Device complexity
If direct solution printing of electrode onto electronic carrier substrate is performed, then process simplicity is improved, but chemical compatibility and layer integrity are worsened
Solution Approach 1:
The fabrication process is segmented into independent modules: release substrate preparation, conductive layer formation, and electrode transfer. This modular approach maintains process simplicity while ensuring layer interface integrity, as each module can be optimized independently without compromising the others.
Data Source
AI summary
A transferrable electrode arrangement comprising: a flexible release substrate having a release surface; and a transferrable electrode comprising at least one conductive layer located over the release surface of the release substrate comprising a solution-processed conductive layer, wherein the at least one conductive layer includes an interfacing conductive layer that interfaces with a receiving surface, and comprises a carbonaceous conductive layer or an organic conductive layer, and wherein the transferrable electrode is releasably attached to the release surface of the release substrate.