Polygermyne - a prototype system for layered germanium polymers

Günther Vogg; Martin S. Brandt; Martin Stutzmann

doi:10.1002/1521-4095(200009)12:17<1278::AID-ADMA1278>3.0.CO;2-Y

Polygermyne - a prototype system for layered germanium polymers

Günther Vogg, Martin S. Brandt, Martin Stutzmann

TUM Emeriti of Excellence

Walter Schottky Institut

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

The topochemical reaction of CaGe₂ with HCl was studied at low temperature. The resulting product is the new crystalline layered compound polygermyne (GeH)_n, which is isomorphic to polysilyne (SiH)_n. The layers are stacked in a six-fold sequence with a separation of 5.65 angstroms. Polygermyne exhibits a very intense near infrared photoluminescence. This property, together with the possibility of epitaxial preparation on Ge substrates, suggests future optoelectronic applications, which are of interest since Ge itself cannot luminesce strongly due to its indirect bandgap.

Original language	English
Pages (from-to)	1278-1281
Number of pages	4
Journal	Advanced Materials
Volume	12
Issue number	17
DOIs	https://doi.org/10.1002/1521-4095(200009)12:17<1278::AID-ADMA1278>3.0.CO;2-Y
State	Published - 1 Sep 2000

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title = "Polygermyne - a prototype system for layered germanium polymers",

abstract = "The topochemical reaction of CaGe2 with HCl was studied at low temperature. The resulting product is the new crystalline layered compound polygermyne (GeH)n, which is isomorphic to polysilyne (SiH)n. The layers are stacked in a six-fold sequence with a separation of 5.65 angstroms. Polygermyne exhibits a very intense near infrared photoluminescence. This property, together with the possibility of epitaxial preparation on Ge substrates, suggests future optoelectronic applications, which are of interest since Ge itself cannot luminesce strongly due to its indirect bandgap.",

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AU - Brandt, Martin S.

AU - Stutzmann, Martin

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N2 - The topochemical reaction of CaGe2 with HCl was studied at low temperature. The resulting product is the new crystalline layered compound polygermyne (GeH)n, which is isomorphic to polysilyne (SiH)n. The layers are stacked in a six-fold sequence with a separation of 5.65 angstroms. Polygermyne exhibits a very intense near infrared photoluminescence. This property, together with the possibility of epitaxial preparation on Ge substrates, suggests future optoelectronic applications, which are of interest since Ge itself cannot luminesce strongly due to its indirect bandgap.

AB - The topochemical reaction of CaGe2 with HCl was studied at low temperature. The resulting product is the new crystalline layered compound polygermyne (GeH)n, which is isomorphic to polysilyne (SiH)n. The layers are stacked in a six-fold sequence with a separation of 5.65 angstroms. Polygermyne exhibits a very intense near infrared photoluminescence. This property, together with the possibility of epitaxial preparation on Ge substrates, suggests future optoelectronic applications, which are of interest since Ge itself cannot luminesce strongly due to its indirect bandgap.

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JO - Advanced Materials

JF - Advanced Materials

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Polygermyne - a prototype system for layered germanium polymers

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