DOI: 10.1126/science.248.4957.840. Electro-Optical Evidence for the Chelate Effect at Semiconductor Surfaces

Electro-Optical Evidence for the Chelate Effect at Semiconductor Surfaces

10.1126/science.248.4957.840

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Monoamines and diamines dissolved in cyclohexane solution reversibly enhance the band-edge photoluminescence (PL) intensity of immersed n-type cadmium sulfide (n-CdS) and n-type cadmium selenide (n-CdSe) substrates through adsorption. The magnitude of the PL increase is used to estimate amine-induced contractions in the semiconductor's depletion width, and the dependence of the PL intensity on amine concentration provides an estimate of the adduct formation constant. Two diamines, ethylenediamine and o -phenylenediamine, exhibit unusually low reductions in depletion width and substantially larger adduct equilibrium constants relative to the other amines studied, consistent with chelation to surface Cd 2+ ions. These studies demonstrate that PL can be used as a contactless, in situ technique for characterizing the steric and electronic landscape of semiconductor surfaces and for correlating molecular and surface chemistry.

Bibliography

Lisensky, G. C., Penn, R. L., Murphy, C. J., & Ellis, A. B. (1990). Electro-Optical Evidence for the Chelate Effect at Semiconductor Surfaces. Science, 248(4957), 840â843.

Authors 4

George C. Lisensky (first)
Rona L. Penn (additional)
Catherine J. Murphy (additional)
Arthur B. Ellis (additional)

References 29 Referenced 65

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DANNHAUSER, T, PHOTOPHYSICS OF QUANTIZED COLLOIDAL SEMICONDUCTORS DRAMATIC LUMINESCENCE ENHANCEMENT BY BINDING OF SIMPLE AMINES, JOURNAL OF PHYSICAL CHEMISTRY 90: 6074 (1986). (10.1021/j100281a004) / JOURNAL OF PHYSICAL CHEMISTRY (1986)
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ELDER, R.C., CRYSTAL-STRUCTURE OF TETRAKIS(ORTHO PHENYLENEDIAMINE)NICKEL(II) CHLORIDE-BIS(ORTHO PHENYLENEDIAMINE) ADDUCT, [NI(OPDA)4]CL2 2OPDA - CRYSTAL CONTAINING BIDENTATE, MONODENTATE, AND TOOTHLESS OPDA, INORGANIC CHEMISTRY 13: 1644 (1974). (10.1021/ic50137a020) / INORGANIC CHEMISTRY (1974)
ELLIS, A.B., CHEM STRUCTURE INTER: CH6 (1986). / CHEM STRUCTURE INTER (1986)
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GILEADI, E, ELECTROSORPTION: CH1 (1967). / ELECTROSORPTION (1967)
GRIFFITH, W.P., X-RAY CRYSTAL-STRUCTURE OF [RU2N(ETHYLENEDIAMINE)5]CL5.H2O - A NOVEL COMPLEX CONTAINING BOTH NITRIDO AND ETHYLENEDIAMINE BRIDGES, JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS: 434 (1984). / JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS (1984)
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Dates

Type	When
Created	18 years, 10 months ago (Oct. 5, 2006, 6:10 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 9:35 a.m.)
Indexed	1 week ago (Aug. 21, 2025, 1:07 p.m.)
Issued	35 years, 3 months ago (May 18, 1990)
Published	35 years, 3 months ago (May 18, 1990)
Published Print	35 years, 3 months ago (May 18, 1990)

Funders 0

None

BibTeX

@article{Lisensky_1990, title={Electro-Optical Evidence for the Chelate Effect at Semiconductor Surfaces}, volume={248}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.248.4957.840}, DOI={10.1126/science.248.4957.840}, number={4957}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Lisensky, George C. and Penn, Rona L. and Murphy, Catherine J. and Ellis, Arthur B.}, year={1990}, month=may, pages={840–843} }

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