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Related Concept Videos

P-N junction01:11

P-N junction

633
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...
633

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Related Experiment Video

Updated: Aug 27, 2025

Morphology Control for Fully Printable Organic&#8211;Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
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Efficient All-Polymer Solar Cells Enabled by Interface Engineering.

Guoping Zhang1, Lihong Wang1, Chaoyue Zhao1

  • 1College of New Materials and New Energies, Shenzhen Technology University, Shenzhen 518118, China.

Polymers
|September 23, 2022
PubMed
Summary
This summary is machine-generated.

Interface engineering with PDINN significantly boosts all-polymer solar cell (all-PSC) performance. This strategy enhances fill factor (FF) and power conversion efficiency (PCE), achieving record results for PY-IT-based devices.

Keywords:
all-polymer solar cellselectron transport layerorganic photovoltaicspower conversion efficiency

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Renewable Energy

Background:

  • All-polymer solar cells (all-PSCs) utilize polymer donors and acceptors for scalable production.
  • Polymerized small-molecule acceptors (PSMAs) have advanced all-PSC efficiency, but often suffer from low fill factors (FF).
  • Interface engineering is a key strategy to overcome limitations in all-PSC device performance.

Purpose of the Study:

  • To improve the fill factor (FF) and power conversion efficiency (PCE) of all-polymer solar cells (all-PSCs).
  • To investigate the use of PDINN as an interfacial layer for enhanced electron transport.
  • To demonstrate the effectiveness of this interfacial engineering approach across different all-polymer material systems.

Main Methods:

  • Fabrication of all-polymer solar cells (all-PSCs) using a PY-IT-based system.
  • Implementation of PDINN as the electron transport layer (ETL) for interfacial engineering.
  • Characterization of device performance, focusing on fill factor (FF) and power conversion efficiency (PCE).

Main Results:

  • The use of PDINN as an ETL increased the device fill factor (FF) from 69.21% to 72.05%.
  • Power conversion efficiency (PCE) was boosted from 15.47% to 16.41% with the PDINN interfacial layer.
  • Achieved the highest reported efficiency for a PY-IT-based binary all-polymer solar cell.

Conclusions:

  • Interfacial layer engineering with PDINN is an effective strategy to enhance all-PSC performance.
  • PDINN improves electron transport and fill factor in all-polymer solar cells.
  • The demonstrated method shows broad applicability for improving various all-polymer solar cell systems.