Zinc Oxide Photoconductivity via Phenyl Block Copolymer Doping
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Solution Overview
Problem
Current methods for enhancing the photoconductivity and sun protection factor (SPF) of semiconductors, such as zinc oxide, often require costly doping processes or result in suboptimal SPF values, limiting their performance in electronic and sunscreen applications.
Innovation Solution
Combining zinc oxide semiconductors with ethylene/butadiene/styrene block copolymers containing multiple phenyl groups in a polar organic carrier oil dispersion, which acts as an external dopant to enhance photoconductivity and SPF without the need for traditional doping processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional doping processes are used to enhance photoconductivity and SPF of semiconductors, then the photoconductivity and SPF are improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent introduces phenyl groups as intermediary substances that mediate between the semiconductor material and light/UV radiation. These phenyl groups act as external dopants that enhance photoconductivity and SPF without requiring complex internal doping processes, thereby resolving the contradiction between performance improvement and manufacturing complexity
Solution Approach 2:
The patent changes the chemical composition parameters by introducing compounds with multiple phenyl groups into the semiconductor system. This parameter change (adding phenyl-containing compounds) achieves enhanced photoconductivity and SPF through a simpler approach than traditional doping, resolving the technical contradiction
2Reliability
If more semiconductor material is used to achieve higher SPF, then the SPF increases, but the quantity of substance and cost increase
Solution Approach 1:
The patent changes the chemical environment parameters by introducing phenyl-containing compounds, which enhance the photoconductivity per unit of semiconductor material. This allows achieving higher SPF with reduced semiconductor quantity, as the phenyl groups amplify the effectiveness of each semiconductor particle
Solution Approach 2:
The patent creates a composite system combining semiconductor particles with phenyl-containing compounds. This composite approach enhances the functional properties (SPF and photoconductivity) beyond what the semiconductor material alone can provide, reducing the need for large quantities of expensive semiconductor material
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
This approach significantly increases the SPF and photoconductivity of zinc oxide, allowing for reduced semiconductor material usage and achieving high SPF values previously unattainable, with synergistic effects in UV absorption and microwave energy absorption, suitable for both electronic and sunscreen applications.
Implementation Method 1
Combining zinc oxide semiconductors with ethylene/butadiene/styrene block copolymers containing multiple phenyl groups in a polar organic carrier oil dispersion, which acts as an external dopant to enhance photoconductivity and SPF
Implementation Method 2
with synergistic effects in UV absorption and microwave energy absorption
Implementation Method 3
dispersing them with chemical compounds having multiple phenyl groups, in a polar organic carrier oil
Data Source
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AI summary
The present disclosure provides a way to enhance the photoconductivity and/or the SPF of a semiconductor. By dispersing the semiconductor with a compound having multiple phenyl groups in a polar carrier oil, the semiconductor exhibits greatly improved photoconductivity and/or SPF over dispersions comprising the semiconductor alone.