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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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Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells
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Quantitative Deposition Enables Dual Passivation Synergy for Efficient Inverted Perovskite Solar Cells.

Rui Yang1, Jinxin Yang1, Ziqi Zhu1

  • 1Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, China.

Small (Weinheim an Der Bergstrasse, Germany)
|May 20, 2026
PubMed
Summary
This summary is machine-generated.

Precise inkjet printing of 1,3-propyldiammonium diiodide (PDADI) controls passivation in perovskite solar cells (PSCs). Optimal deposition density maximizes efficiency (26.1% PCE) and stability by balancing chemical and field-effect passivation.

Keywords:
deposition surface densityinkjet printinginverted perovskite solar cellspassivationquantitative deposition

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Area of Science:

  • Materials Science
  • Photovoltaics
  • Chemical Engineering

Background:

  • Non-radiative recombination at the perovskite/C60 interface significantly reduces inverted perovskite solar cell (PSC) performance.
  • Integrated chemical and field-effect passivation strategies offer a solution, but precise deposition control remains a challenge.

Purpose of the Study:

  • To investigate the impact of quantitatively controlled deposition of 1,3-propyldiammonium diiodide (PDADI) on passivation mechanisms in PSCs.
  • To establish a correlation between PDADI deposition density and passivation effectiveness for optimizing device performance and stability.

Main Methods:

  • Utilized drop-on-demand inkjet printing for precise and uniform deposition of PDADI.
  • Systematically varied PDADI deposition density to study its effect on chemical and field-effect passivation.
  • Evaluated device performance, including power conversion efficiency (PCE) and operational stability.

Main Results:

  • Established a clear correlation between PDADI deposition density and passivation outcome.
  • Identified an optimal deposition density that synergistically enhances defect suppression and field-effect passivation.
  • Demonstrated that excessive deposition leads to disordered packing, reduced field effect, energy-level misalignment, and increased series resistance.

Conclusions:

  • Quantitative deposition control is crucial for optimizing passivation mechanisms in PSCs.
  • Inkjet printing of PDADI provides a scalable pathway to achieve highly efficient (26.1% PCE) and stable perovskite solar cells.
  • Understanding the deposition-density-dependent passivation is fundamental for advancing perovskite photovoltaic technology.