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We study the structural development of complex soft materials to elucidate their processing-structure-function relationships for optoelectronics and energy applications.

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Research Spotlight

Perovskite Solar Cells: Extending the Photovoltaic Response of Perovskite Solar Cells into the Near‐Infrared with a Narrow‐Bandgap Organic Semiconductor

We demonstrate a near‐infrared‐harvesting perovskite solar cell with enhanced power‐conversion efficiency as high as 21.6% and improved stability, with an operational half‐life of 1900 h, by directly incorporating a multifunctional organic semiconductor that both extends light absorption and passivates defects in the perovskite active layers. This work provides a promising approach to prepare highly efficient and stable perovskites solar cells and opens a new application field for the rational design of narrow‐bandgap organic semiconductors.

Assessing the Huang-Brown Description of Tie Chains for Charge Transport in Conjugated Polymers

Tie chains electrically bridge crystalline domains in semiconducting polymers, effectively reducing interdomain resistance and improving charge transport. In this work, we quantified the tie-chain fraction through a classical polymer–physics framework and established the percolation threshold for charge transport in poly(3-hexylthiophene)s.

Pairing of Near-UV Solar Cells with Electrochromic Windows for Smart Management of the Solar Spectrum

The various wavelengths of the solar spectrum can be exploited for different functionalities. We have developed an organic solar cell that harvests near-ultraviolet photons to power an electrochromic device that controls how many photons go through a smart window in other wavelength ranges, adjusting both visible light and heat ingress.

High Performance OTFTs Fabricated Using a Calamitic Liquid Crystalline Material of 2-(4-Dodecyl phenyl)[1]benzothieno[3,2-b][1]benzothiophene]

In collaboration with researchers at Peking University at Shenzhen, we recently demonstrated high performance organic thin-film transistors with high thermal stability that incorporate an air-stable calamitic liquid crystalline molecular semiconductor.

Research Spotlight archive

News

Xiaoming has been selected as a recipient of a 2021 Blavatnik Regional Award for Young Scientists. Congratulations!

Tuesday, September 21, 2021

Lynn Loo to lead new global center to help the shipping sector decarbonize.

Saturday, August 14, 2021

Tianran's project on transprent perovskites has been selected to receive a Metropolis Project grant. Congratulations!

Wednesday, June 30, 2021

Jeni Sorli, successfully defends her Ph.D. Congratulations and good luck Dr. Sorli!

Tuesday, June 29, 2021
News archive