Effective Electron Lifetime Determination via Temporal Shift
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing techniques for determining effective electron lifetime in photovoltaic components are complex and require extensive calculations, making them cumbersome and resource-intensive.
Innovation Solution
A method involving the emission of an excitation light beam with pulses, detection of photoluminescence, and calculation of effective electron lifetime based on temporal shifts between excitation and photoluminescence pulses, simplifying the process and reducing hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If known MPL techniques are used to determine effective electron lifetime, then measurement capability is achieved, but calculation complexity increases
Solution Approach 1:
The patent extracts only the essential temporal shift information between excitation and photoluminescence pulses, discarding unnecessary complex calculations. By focusing solely on the time delay measurement between corresponding pulses, the method achieves accurate effective electron lifetime determination while significantly reducing computational complexity.
Solution Approach 2:
Instead of using complex spectral analysis and fitting procedures to determine lifetime, the patent inverts the approach by directly measuring the temporal shift in the time domain. This inversion from frequency-domain complex analysis to time-domain direct measurement simplifies the calculation while maintaining measurement accuracy.
2Measurement precision
If complex MPL techniques are employed, then measurement accuracy is maintained, but hardware requirements increase
Solution Approach 1:
The patent replaces complex optical hardware systems with a simplified time-domain measurement approach. By substituting complex spectral analysis equipment with direct temporal shift detection, the method maintains measurement precision while reducing hardware complexity and requirements.
3Measurement precision
If traditional MPL methods are used, then comprehensive data is obtained, but processing time increases
Solution Approach 1:
The patent skips the intermediate complex processing steps of traditional MPL methods by directly measuring the temporal shift between pulses. This rushing through to the essential measurement parameter eliminates unnecessary computational steps, significantly reducing processing time while maintaining determination accuracy.
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 simplifies the determination of effective electron lifetime, enables fast measurements, and lowers the necessary hardware and computational resources, improving efficiency in the photovoltaic manufacturing process.
Implementation Method 1
detecting a photoluminescence light emitted by the component in response to the excitation light beam
Data Source
AI summary
A method and device for determining effective electron lifetime in a component to be analysed, including emitting an excitation light beam with pulses, detecting a photoluminescence light emitted by the component in response to the excitation light beam, and for each of said pulses of the excitation light beam, calculating an effective electron lifetime value based on a temporal shift between this pulse and a corresponding pulse of the photoluminescence light.