Perovskite Phosphor Light Conversion for Visible Light Data Transfer
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Solution Overview
Problem
Current lighting and data transfer technologies face challenges with crowded spectra and limited bandwidth, failing to meet the growing demand for efficient multifunctional solutions that combine lighting and data communication effectively.
Innovation Solution
The use of halide perovskite and phosphor materials in devices and systems that absorb and emit visible light energy, enabling efficient solid-state lighting and visible light communication by modulating light energy to encode and transmit data sets at high speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional lighting and data transfer technologies are used, then existing infrastructure can be maintained, but spectrum crowding and limited bandwidth prevent meeting growing demand for efficient multifunctional solutions
Solution Approach 1:
The patent combines lighting and data communication functions into a single device using a blue LED excitation source that simultaneously generates visible light for illumination and modulated light for data transmission through phosphor materials, eliminating the need for separate infrastructure
Solution Approach 2:
The invention transitions from radio frequency spectrum to optical spectrum for data transmission, utilizing the vast unused optical bandwidth in the visible range to overcome spectrum crowding, enabling data rates up to 3 Gbit/s while maintaining lighting function
2Productivity
If halide perovskite and phosphor materials are used for light absorption and emission, then lighting efficiency and data transmission rate are improved, but device complexity increases
Solution Approach 1:
The device uses composite phosphor materials including halide perovskite and traditional phosphors that can be integrated into the LED structure, achieving high data transmission rates through material properties rather than complex device architecture
Solution Approach 2:
The patent optimizes phosphor materials with specific properties (halide perovskite with appropriate bandgap, emission wavelengths) to enhance modulation bandwidth and data transmission rate, achieving high productivity through material parameter selection rather than structural 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
This approach achieves high modulation bandwidth and data transmission rates, producing bright, high-quality white light for lighting applications and enabling data transfer at up to 3 Gbit/s, surpassing conventional technologies in both lighting efficiency and data communication capabilities.
Implementation Method 1
the material absorbs the first light energy from the excitation source
Implementation Method 2
the material absorbs the first light energy from the excitation source and emits a second light energy at a wavelength in the visible range
Data Source
AI summary
A device including a material including halide perovskite nanocrystals forming a film and configured to receive first electromagnetic radiation having a first wavelength emitted by an excitation source, the first electromagnetic radiation is modulated to include information prior to being received by the material, the material is configured to absorb the first electromagnetic radiation including the information and to emit second electromagnetic radiation having a second wavelength and also including the information, the second wavelength being in the visible range, and the first wavelength of the first electromagnetic radiation is shorter than the visible range; a detector configured to receive the second electromagnetic radiation and to extract the information; and a screen connected to the detector and configured to display the information.