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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 23 — Nov. 5, 2012
  • pp: 25255–25266

Large-area semi-transparent light-sensitive nanocrystal skins

Shahab Akhavan, Burak Guzelturk, Vijay Kumar Sharma, and Hilmi Volkan Demir  »View Author Affiliations

Optics Express, Vol. 20, Issue 23, pp. 25255-25266 (2012)

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We report a large-area, semi-transparent, light-sensitive nanocrystal skin (LS-NS) platform consisting of single monolayer colloidal nanocrystals. LS-NS devices, which were fabricated over areas up to 48 cm2 using spray-coating and several cm-squares using dip-coating, are operated on the principle of photogenerated potential buildup, unlike the conventional charge collection. Implementing proof-of-concept devices using CdTe nanocrystals with ligand removal, we observed a substantial sensitivity enhancement factor of ~73%, accompanied with a 3-fold faster response time (<100 ms). With fully sealed nanocrystal monolayers, LS-NS is found to be highly stable under ambient conditions, promising for low-cost large-area UV/visible sensing in windows and facades of smart buildings.

© 2012 OSA

OCIS Codes
(230.0230) Optical devices : Optical devices
(250.0250) Optoelectronics : Optoelectronics
(160.4236) Materials : Nanomaterials
(220.4241) Optical design and fabrication : Nanostructure fabrication
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(250.5590) Optoelectronics : Quantum-well, -wire and -dot devices

ToC Category:
Optical Devices

Original Manuscript: August 6, 2012
Revised Manuscript: September 22, 2012
Manuscript Accepted: October 11, 2012
Published: October 22, 2012

Shahab Akhavan, Burak Guzelturk, Vijay Kumar Sharma, and Hilmi Volkan Demir, "Large-area semi-transparent light-sensitive nanocrystal skins," Opt. Express 20, 25255-25266 (2012)

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