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Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors
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Synthesis, Cellular Delivery and In vivo Application of Dendrimer-based pH Sensors

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Towards high-performance DPP-based sensitizers for DSC applications.

Jun-Ho Yum1, Thomas W Holcombe, Yongjoo Kim

  • 1Laboratory for Photonics and Interfaces, Institution of Chemical Sciences and Engineering, School of Basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland. junho.yum@epfl.ch

Chemical Communications (Cambridge, England)
|October 2, 2012
PubMed
Summary
This summary is machine-generated.

Researchers developed a new asymmetric DPP core for dye-sensitized solar cells (DSCs). This innovation led to high efficiency, reaching 8.6% power conversion efficiency (PCE) under standard sunlight conditions.

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Area of Science:

  • Materials Science
  • Photovoltaics
  • Organic Electronics

Background:

  • Dye-sensitized solar cells (DSCs) are a promising photovoltaic technology.
  • Developing efficient and stable organic materials is crucial for advancing DSC performance.
  • Donor-Acceptor-Donor (DPP) based materials offer tunable electronic properties for solar applications.

Purpose of the Study:

  • To synthesize and evaluate a novel, asymmetric DPP bridge/core for use in DSC devices.
  • To investigate the impact of desymmetrizing the DPP core on device performance.
  • To optimize DSC efficiency using the novel DPP material.

Main Methods:

  • Synthesis of a novel asymmetric DPP bridge/core.
  • Fabrication and testing of DSC devices incorporating the new material.
  • Measurement of Incident Photon-to-Current Efficiency (IPCE) and power conversion efficiency (PCE).

Main Results:

  • The asymmetric DPP core was successfully synthesized.
  • Desymmetrizing the DPP core resulted in a remarkable IPCE exceeding 80%.
  • A maximum power conversion efficiency (PCE) of 7.7% was achieved with the novel material.
  • Further optimization using a wide-bandgap co-sensitizer yielded an 8.6% PCE under standard AM1.5G sunlight.

Conclusions:

  • The novel asymmetric DPP bridge/core is a highly effective component for DSCs.
  • Desymmetrization of the DPP core significantly enhances device performance, particularly IPCE.
  • The developed material shows potential for achieving high-efficiency solar energy conversion.