NDLI: Solution processed infrared- and thermo-photovoltaics based on 0.7 eV bandgap PbS colloidal quantum dots.

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Solution processed infrared- and thermo-photovoltaics based on 0.7 eV bandgap PbS colloidal quantum dots.

Content Provider	Semantic Scholar
Author	Bertran, Arnau Gupta, Shuchi Ramiro, Iñ́igo Pradhan, Santanu Christodoulou, Sotirios Majji, Shanmukh-Naidu Akgul, Mehmet Zafer Konstantatos, Gerasimos
Copyright Year	2019
Abstract	Harnessing low energy photons is of paramount importance for multi-junction high efficiency solar cells as well as for thermo-photovoltaic applications. However, semiconductor absorbers with the bandgap lower than 0.8 eV have been limited to III-V (InGaAs) or IV (Ge) semiconductors that are characterized by high manufacturing costs and complicated lattice matching requirements in their growth and integration with higher bandgap cells. Here, we have developed solution processed low bandgap photovoltaic devices based on PbS colloidal quantum dots (CQDs) with a bandgap of 0.7 eV suited for both thermo-photovoltaics and low energy solar photon harvesting. By matching the spectral response of those cells to that of the infrared solar spectrum, we report a record high short circuit current (JSC) of 37 mA cm-2 under the full solar spectrum and 5.5 mA cm-2 when placed at the back of a silicon wafer resulting in power conversion efficiencies (PCEs) of 6.4% and 0.7%, respectively. Moreover, the device reached an above bandgap PCE of ∼6% as a thermo-photovoltaic cell recorded under a 1000 °C blackbody radiator.
Starting Page	838
Ending Page	843
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1039/c8nr08755e
PubMed reference number	30574637
Journal	Medline
Volume Number	11
Issue Number	3
Alternate Webpage(s)	https://arxiv.org/pdf/1909.10264v1.pdf
Alternate Webpage(s)	http://www.rsc.org/suppdata/c8/nr/c8nr08755e/c8nr08755e1.pdf
Alternate Webpage(s)	http://arxiv-export-lb.library.cornell.edu/pdf/1909.10264
Alternate Webpage(s)	https://doi.org/10.1039/c8nr08755e
Journal	Nanoscale
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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