Photoconductivity of CdTe Nanocrystal-Based Thin Films: Te2- Ligands Lead To Charge Carrier Diffusion Lengths Over 2 mu m

Crisp R, Callahan R, Reid OG, Dolzhnikov DS, Talapin DV, Rumbles G, Luther JM, Kopidakis N (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Journal of Physical Chemistry Letters American Chemical Society

Publisher: AMER CHEMICAL SOC

Book Volume: 6

Pages Range: 4815-4821

Journal Issue: 23

DOI: 10.1021/acs.jpclett.5b02252

Abstract

We report on photoconductivity of films of CdTe nanocrystals (NCs) using time-resolved microwave photoconductivity (TRMC). Spherical and tetrapodal CdTe NCs with tunable size-dependent properties are studied as a function of surface ligand (including inorganic molecular chalcogenide species) and annealing temperature. Relatively high carrier mobility is measured for films of sintered tetrapod NCs (4 cm(2)/(V s)). Our TRMC findings show that Te2- capped CdTe NCs show a marked improvement in carrier mobility (11 cm(2)/(V s)), indicating that NC surface termination can be altered to play a crucial role in charge-carrier mobility even after the NC solids are sintered into bulk films.

Authors with CRIS profile

Ryan Crisp Lehrstuhl für Chemistry of thin film materials

Involved external institutions

University of Chicago US United States (USA) (US) National Renewable Energy Laboratory (NREL) US United States (USA) (US) University of Colorado System US United States (USA) (US)

How to cite

APA:

Crisp, R., Callahan, R., Reid, O.G., Dolzhnikov, D.S., Talapin, D.V., Rumbles, G.,... Kopidakis, N. (2015). Photoconductivity of CdTe Nanocrystal-Based Thin Films: Te2- Ligands Lead To Charge Carrier Diffusion Lengths Over 2 mu m. Journal of Physical Chemistry Letters, 6(23), 4815-4821. https://dx.doi.org/10.1021/acs.jpclett.5b02252

MLA:

Crisp, Ryan, et al. "Photoconductivity of CdTe Nanocrystal-Based Thin Films: Te2- Ligands Lead To Charge Carrier Diffusion Lengths Over 2 mu m." Journal of Physical Chemistry Letters 6.23 (2015): 4815-4821.

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