Quantum Dot Solar Cell Layout for Multi-Angle Device Charging
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Solution Overview
Problem
Mobile and wearable electronic devices face rapid power consumption issues due to limited battery capacity, necessitating efficient solar cell charging solutions that can harness light energy effectively regardless of device orientation and light incidence.
Innovation Solution
Incorporating a polymer with quantum dots, multiple solar cells with different wavelength bands, and optical components like prisms or lenses to redirect and convert light into electrical energy, ensuring high photoelectric conversion efficiency across various light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single solar cell is disposed in a specific direction to maximize light incident, then photoelectric conversion efficiency is improved, but the device cannot charge effectively when positioned in different directions or when light is not incident to the solar cell
Solution Approach 1:
The solar cell array is divided into multiple solar cells disposed at different orientations and positions. Each solar cell is optimized for specific light incident directions, allowing the system to capture light from multiple angles simultaneously, thus resolving the contradiction between maximizing conversion efficiency for a specific direction and maintaining adaptability for different orientations.
Solution Approach 2:
The solar cell array is designed to perform multiple functions: capturing direct light from various directions, utilizing reflected light through reflection layers, and converting light across different wavelength bands. This multi-functional design enables effective charging regardless of device orientation or lighting conditions.
2Adaptability or versatility
If quantum dots are used to change light path and enable multi-directional light capture, then adaptability is improved, but device complexity increases due to additional polymer and optical components
Solution Approach 1:
Quantum dots are embedded within a polymer matrix, forming a composite material that integrates light-absorbing and light-re-emitting functions. This nested structure allows the quantum dots to be contained within the polymer while working together to capture and redirect light, reducing the need for separate optical components and thereby managing device complexity.
Solution Approach 2:
The use of composite materials, specifically the polymer-quantum dot composite, combines the light-absorbing properties of quantum dots with the structural and optical properties of the polymer. This composite approach enables multi-directional light capture and wavelength conversion while integrating multiple functions into a single material system, thus improving adaptability without proportionally increasing device complexity.
3Productivity
If multiple solar cells with different wavelength bands are used to maximize light absorption, then photoelectric conversion efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The solar cell array is segmented into multiple solar cells, each designed to target specific wavelength bands. This segmentation allows for optimized photoelectric conversion across the solar spectrum while enabling modular manufacturing approaches, where each solar cell type can be produced and tested independently before assembly into the complete array.
Solution Approach 2:
Different solar cells in the array are designed with varying parameters, specifically their spectral response characteristics, to match different wavelength bands. This parameter optimization allows the system to maximize overall conversion efficiency by capturing a broader range of light wavelengths, while the modular nature of the design facilitates standardized manufacturing processes for each solar cell type.
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 configuration enables continuous and efficient charging of electronic devices by converting incident and re-emitted light with high efficiency, extending battery life and maintaining device functionality.
Implementation Method 1
a wavelength of a first portion of first light passing through the polymer may be included in the first wavelength band, and a wavelength of a first portion of second light absorbed and then discharged again by at least some of the plurality of quantum dots may be included in the second wavelength band
Implementation Method 2
at least one first solar cell disposed under the polymer; at least one second solar cell disposed on a side of the polymer; and a battery configured to be charged with electrical energy from at least one of the first solar cell or the second solar cell
Implementation Method 3
at least one prism or at least one lens disposed in the polymer, in which the at least one prism or the at least one lens may change a traveling direction of light absorbed and then discharged again by at least some of the plurality of quantum dots to the solar cell
Data Source
AI summary
According to various embodiments, an electronic device comprises: a polymer including a plurality of quantum dots; at least one first solar cell disposed on a lower portion of the polymer; and at least one second solar cell disposed on a side portion of the polymer; and a battery configured to be charged with electrical energy from at least one of the first solar battery or the second solar battery, wherein: the first solar battery, in a first wavelength band, has a conversion efficiency greater than or equal to a threshold value; the second solar battery, in a second wavelength band different from the first wavelength band, has a conversion efficiency greater than or equal to the threshold value; and the wavelength of light that passes through the polymer may be within the first wavelength band, and the wavelength of light that is absorbed by at least some of the plurality of quantum dots and then remitted may be within the second wavelength bandwidth. Other various embodiments are possible.