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Related Concept Videos

P-N junction01:11

P-N junction

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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Updated: May 9, 2026

Developing High Performance GaP/Si Heterojunction Solar Cells
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Published on: November 16, 2018

Vertically oriented 1D/3D heterojunction for efficient and stable inverted perovskite solar cells.

Hongyu Chen1,2, Xueliang Zhu3, Kangwei Mo4

  • 1College of Sciences, China Jiliang University, Hangzhou, China.

Nature Communications
|May 7, 2026
PubMed
Summary

Vertically aligned 1D/3D perovskite solar cells achieve high efficiency and stability. This novel interface engineering strategy enhances carrier transport and reduces energy loss, paving the way for durable, high-performance solar devices.

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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

Published on: September 8, 2017

Area of Science:

  • Materials Science
  • Renewable Energy
  • Nanotechnology

Background:

  • Perovskite solar cells (PSCs) show promise but face stability challenges.
  • Conventional 1D perovskites exhibit poor carrier transport due to orientation issues.
  • Improving charge transport and reducing interface defects are crucial for PSC efficiency.

Purpose of the Study:

  • To develop a stable and efficient 1D/3D heterostructure perovskite solar cell.
  • To enhance longitudinal carrier transport and minimize energy loss.
  • To improve the operational durability of perovskite solar cells.

Main Methods:

  • Fabrication of 1D/3D heterostructure PSCs using a bilayer interface engineering strategy.
  • Induction of vertically oriented 1D capping layers on 3D perovskite surfaces.
  • Characterization of device performance, carrier dynamics, and stability under stress conditions.

Main Results:

  • Achieved a champion power conversion efficiency of 25.9% (26.0% certified).
  • Minimized photovoltage deficit to 350 mV by tuning energy levels and reducing interface traps.
  • Demonstrated excellent stability, retaining 83% and 86% efficiency after 500 and 1200 hours at 85 °C under illumination.

Conclusions:

  • The vertically ordered 1D/3D heterojunction significantly enhances carrier lifetime and transport.
  • Interface engineering strategy effectively reduces interface trap density and photovoltage deficit.
  • The developed PSCs exhibit exceptional practical durability and high performance, suitable for commercial applications.