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Updated: Apr 5, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

Published on: September 12, 2014

Dye-Sensitized Solar Cell with Integrated Triplet-Triplet Annihilation Upconversion System.

Andrew Nattestad¹, Yuen Yap Cheng², Rowan W MacQueen²

¹†ARC Centre of Excellence for Electromaterials Science (ACES), Intelligent Polymer Research Institute (IPRI), The University of Wollongong, North Wollongong, NSW 2522, Australia.

The Journal of Physical Chemistry Letters

|August 19, 2015

Summary

This summary is machine-generated.

Photon upconversion enhances solar cell response to low-energy light. This study integrates dye-sensitized solar cells with triplet-triplet annihilation upconversion, achieving competitive performance in a novel photovoltaic device.

Keywords:

DSC efficiency figure of merit photochemical upconversion solar cell sub-bandgap excitation

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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light

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Published on: December 27, 2018

Area of Science:

Materials Science
Renewable Energy
Photovoltaics

Background:

Solar cells struggle to utilize sub-bandgap light, limiting efficiency.
Photon upconversion (UC) offers a route to harness this unused light.
Triplet-triplet annihilation upconversion (TTA-UC) is a promising UC mechanism.

Purpose of the Study:

To investigate the integration of TTA-UC systems with dye-sensitized solar cells (DSCs).
To evaluate the performance enhancement of an integrated photovoltaic device under sub-bandgap illumination.
To demonstrate the viability of combining DSC and TTA-UC technologies.

Main Methods:

Fabrication of an integrated device combining a DSC and a TTA-UC system.
Measurement of device performance under low concentration (3 suns) illumination, specifically focusing on sub-bandgap light response.
Characterization of the enhanced current and figure of merit (FoM).

Main Results:

The integrated DSC-TTA-UC device shows improved current generation under sub-bandgap light.
The achieved figure of merit (FoM) is competitive with existing non-integrated systems.
Successful demonstration of the compatibility between DSC and TTA-UC technologies.

Conclusions:

Dye-sensitized solar cells and triplet-triplet annihilation upconversion systems are compatible for integration.
A viable method for creating integrated photovoltaic devices with enhanced sub-bandgap light response has been developed.
This integrated approach offers a promising pathway for improving solar cell efficiency.