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Related Concept Videos

P-N junction01:11

P-N junction

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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
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Trapezoidal channels are widely used in irrigation systems due to their cost-effectiveness and efficiency in conveying water. Trapezoidal channels feature a flat bottom and sloping sides, making them stable and easier to construct compared to other shapes. The bottom width and side slope ratio are determined based on the required flow capacity and site conditions. The side slope is kept gentle for unlined channels to prevent soil erosion.Hydraulic parameters in channel design include the flow...
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Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition
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Interface Engineering for Efficient Raindrop Solar Cell.

Lingjie Xie1,2, Li Yin3, Yina Liu2

  • 1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, 199 Ren-ai Road, Suzhou 215123, Jiangsu, China.

ACS Nano
|March 17, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a hybrid solar cell that harvests energy from both raindrops and sunlight. The novel design significantly boosts raindrop energy conversion efficiency, enabling continuous power generation.

Keywords:
boost output performancecharge blocking effectperovskite solar cellsraindrop energytriboelectric nanogenerator

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Area of Science:

  • Materials Science
  • Renewable Energy Technologies
  • Nanotechnology

Background:

  • Hybrid solar cells offer potential for continuous energy harvesting.
  • Low efficiency in raindrop energy harvesting limits practical applications of raindrop solar cells.
  • Triboelectric nanogenerators (TENGs) can convert mechanical energy from raindrops into electricity.

Purpose of the Study:

  • To develop a highly efficient raindrop energy harvesting system integrated with a perovskite solar cell.
  • To overcome the efficiency limitations of existing raindrop energy harvesting technologies.
  • To create a device capable of generating power from both solar and mechanical (raindrop) energy sources.

Main Methods:

  • Fabrication of a Molybdenum Trioxide (MoO3)/top electrode-based triboelectric nanogenerator (MT-TENG).
  • Integration of the MT-TENG with a perovskite solar cell using shared electrodes.
  • Characterization of the MT-TENG's performance under simulated rainfall conditions.
  • Evaluation of the perovskite solar cell's performance within the hybrid device.

Main Results:

  • The MT-TENG demonstrated a 101.1-fold increase in output charge due to the MoO3 layer's properties.
  • Raindrop energy harvesting achieved a power output of 0.68 mW and a mechanical energy conversion efficiency of 12.49%.
  • The integrated perovskite solar cell maintained a high photovoltaic power conversion efficiency of 19.38% due to the MT-TENG's high transmittance.
  • A 2.2 μF capacitor was charged to 5 V in approximately 175 seconds.

Conclusions:

  • The proposed hybrid device effectively harvests energy from both sunlight and raindrops, addressing the limitations of single-source energy harvesters.
  • The MoO3-based TENG significantly enhances raindrop energy conversion efficiency, making the technology more viable for practical applications.
  • The shared electrode design allows for continuous power generation in diverse environmental conditions, paving the way for self-powered electronic devices.