A1 Journal article (refereed), original research

Bacteriorhodopsin Enhances Efficiency of Perovskite Solar Cells

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Publication Details
Authors: Das Subhabrata, Wu Congcong, Song Zhaoning, Hou Yuchen, Koch Rainer, Somasundaran Ponisseril, Priya Shashank, Barbiellini Bernardo, Venkatesan Renugopalakrishnan
Publisher: American Chemical Society
Publication year: 2019
Language: English
Related Journal or Series Information: ACS Applied Materials and Interfaces
Volume number: 11
Issue number: 34
Start page: 30728
End page: 30734
Number of pages: 7
ISSN: 1944-8244
JUFO-Level of this publication: 2
Open Access: Open Access publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe2019102434618


Recently, halide perovskites have upstaged decades of solar cell
development by reaching power conversion efficiencies that surpass the
performance of polycrystalline silicon. The efficiency improvement in
the perovskite cells is related to repeated recycling between photons
and electron–hole pairs, reduced recombination losses, and increased
carrier lifetimes. Here, we demonstrate a novel approach toward
augmenting the perovskite solar cell efficiency by invoking the Förster
Resonance Energy Transfer (FRET) mechanism. FRET occurs in the
near-field region as the bacteriorhodopsin (bR) protein, and perovskite
has similar optical gaps. Titanium dioxide functionalized with the bR
protein is shown to accelerate the electron injection from excitons
produced in the perovskite layer. FRET predicts the strength of
long-range excitonic transport between the perovskite and bR layers.
Solar cells incorporating TiO2/bR layers are found to exhibit
much higher photovoltaic performance as compared to baseline cells
without bR. These results open the opportunity to develop a new class of
bioperovskite solar cells with improved performance and stability.

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Last updated on 2020-20-03 at 10:03