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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
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Solid state p-type dye sensitized NiO-dye-TiO2 core-shell solar cells.

Lei Tian1, Jens Föhlinger, Zhibin Zhang

  • 1Department of Chemistry-Ångström Lab., Uppsala University, Sweden. haining.tian@kemi.uu.se.

Chemical Communications (Cambridge, England)
|March 29, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed novel solid-state, p-type dye-sensitized solar cells using NiO-dye-TiO2 core-shell structures. An aluminum oxide (Al2O3) barrier layer improved charge transport and suppressed recombination, enhancing performance.

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Dye-sensitized solar cells (DSSCs) are a promising photovoltaic technology.
  • Developing efficient solid-state DSSCs is crucial for commercialization.
  • Core-shell structures offer potential for improved charge separation and transport.

Purpose of the Study:

  • To fabricate and characterize novel solid-state p-type dye-sensitized solar cells.
  • To investigate the effect of an inner barrier layer on device performance.
  • To explore the use of NiO-dye-TiO2 core-shell architectures.

Main Methods:

  • Fabrication of NiO-dye-TiO2 core-shell solar cells using organic dye PB6.
  • Incorporation of an aluminum oxide (Al2O3) inner barrier layer.
  • Electrochemical and photovoltaic performance characterization.

Main Results:

  • Successful fabrication of the first solid-state p-type dye-sensitized NiO-dye-TiO2 core-shell solar cells.
  • Al2O3 barrier layer significantly suppressed recombination between NiO and TiO2.
  • Improved charge transport time observed with the Al2O3 layer.

Conclusions:

  • The developed core-shell structure with an Al2O3 barrier layer is a viable approach for efficient solid-state DSSCs.
  • Suppression of recombination and enhanced charge transport are key to improved device performance.
  • This work opens new avenues for designing advanced photovoltaic devices.