A synergistic assembly of nanoscale lamellar photoconductor hybrids

Marina Sofos, Joshua Goldberger, David A. Stone, Jonathan E. Allen, Qing Ma, David J. Herman, Wei Wen Tsai, Lincoln J. Lauhon, Samuel I Stupp

Research output: Contribution to journalArticle

146 Citations (Scopus)

Abstract

Highly ordered nanostructured organic/inorganic hybrids offer chemical tunability, novel functionalities and enhanced performance over their individual components. Hybrids of complementary p-type organic and n-type inorganic components have attracted interest in optoelectronics, where high-efficiency devices with minimal cost are desired. We demonstrate here self-assembly of a lamellar hybrid containing periodic and alternating 1-nm-thick sheets of polycrystalline ZnO separated by 2-3 nm layers of conjugated molecules, directly onto an electrode. Initially the electrodeposited inorganic is Zn(OH) 2, but π-π interactions among conjugated molecules stabilize synergistically the periodic nanostructure as it converts to ZnO at 150 ° C. As photoconductors, normalized detectivities (D *) greater than 2×10 10 Jones, photocurrent gains of 120 at 1.2 V μm -1 and dynamic ranges greater than 60 dB are observed on selective excitation of the organic. These are among the highest values measured for organic, hybrid and amorphous silicon, making them technologically competitive as low-power, wavelength-tunable, flexible and environmentally benign photoconductors.

Original languageEnglish
Pages (from-to)68-75
Number of pages8
JournalNature Materials
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 2009

Fingerprint

Photoconducting materials
photoconductors
assembly
Molecules
silicon
Amorphous silicon
Photocurrents
Optoelectronic devices
Self assembly
amorphous silicon
dynamic range
photocurrents
self assembly
molecules
Nanostructures
costs
Wavelength
Electrodes
electrodes
wavelengths

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics
  • Materials Science(all)
  • Chemistry(all)

Cite this

Sofos, M., Goldberger, J., Stone, D. A., Allen, J. E., Ma, Q., Herman, D. J., ... Stupp, S. I. (2009). A synergistic assembly of nanoscale lamellar photoconductor hybrids. Nature Materials, 8(1), 68-75. https://doi.org/10.1038/nmat2336

A synergistic assembly of nanoscale lamellar photoconductor hybrids. / Sofos, Marina; Goldberger, Joshua; Stone, David A.; Allen, Jonathan E.; Ma, Qing; Herman, David J.; Tsai, Wei Wen; Lauhon, Lincoln J.; Stupp, Samuel I.

In: Nature Materials, Vol. 8, No. 1, 01.2009, p. 68-75.

Research output: Contribution to journalArticle

Sofos, M, Goldberger, J, Stone, DA, Allen, JE, Ma, Q, Herman, DJ, Tsai, WW, Lauhon, LJ & Stupp, SI 2009, 'A synergistic assembly of nanoscale lamellar photoconductor hybrids', Nature Materials, vol. 8, no. 1, pp. 68-75. https://doi.org/10.1038/nmat2336
Sofos M, Goldberger J, Stone DA, Allen JE, Ma Q, Herman DJ et al. A synergistic assembly of nanoscale lamellar photoconductor hybrids. Nature Materials. 2009 Jan;8(1):68-75. https://doi.org/10.1038/nmat2336
Sofos, Marina ; Goldberger, Joshua ; Stone, David A. ; Allen, Jonathan E. ; Ma, Qing ; Herman, David J. ; Tsai, Wei Wen ; Lauhon, Lincoln J. ; Stupp, Samuel I. / A synergistic assembly of nanoscale lamellar photoconductor hybrids. In: Nature Materials. 2009 ; Vol. 8, No. 1. pp. 68-75.
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