Solar Cells

Product Portfolio:

PbS Quantum Dots
Works in the near infrared (IR) range from 900 to 1600 nm

Quantum Dot Solar Cells

PbS quantum dots are of particular interest in solar photovoltaic applications, in which the semiconductor’s large Bohr exciton radius enables quantum size-effect tuning over the broad solar spectrum. Also this material offers avenues to tandem and multijunction solar cells from a single material via size-effect bandgap tunability. Moreover, their processing from the solution phase should in principle allow rapid, large-scale manufacturing and ready integration with flexible substrates, facilitating roll-to-roll processing.

QD Solar Cell Fabrication

Solar cell devices can be prepared as follows. The PbS Quantum Dot film is deposited in a layer-by-layer fashion by spin coating on HTL/ITO/glass substrate layers. P-type PbS quantum dots of various band gaps can be deposited. Then ETL and top electrode consisting of Ag or Au are deposited by thermal  and electron beam evaporations.

Related Articles

X. Lan et al. Passivation Using Molecular Halides Increases Quantum Dot Solar Cell Performance. Advanced Materials. 2016, 28, 299–304; Z. Ning et al. Air-stable n-type colloidal quantum dot solids. Nature materials. 2014, 13, 822-828; C. M. Chuang. et al. Improved performance and stability in quantum dot solar cells through band alignment engineering. Nature materials. 2014, 13, 796-801; J. Pan et al. Automated Synthesis of Photovoltaic-Quality Colloidal Quantum Dots Using Separate Nucleation and Growth Stages. ACS Nano. 2013, 7 (11), 10158-10166; X. Wang et al. Tandem colloidal quantum dot solar cells employing a graded recombination layer. Nature Photonics. 2011, 5, 480-484

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