Universität zu Köln

Atamturk, Ufuk ORCID: 0000-0002-5627-5375, Jung, Eunhwan, Fischer, Thomas and Mathur, Sanjay (2022). Tale of Two Bismuth Alkylthiolate Precursors' Bifurcating Paths in Chemical Vapor Deposition. Chem. Mat., 34 (16). S. 7344 - 7357. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5002

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Abstract

We report on the application of two bismuth alkylthiolates, Bi(SR)(3), differing only with respect to the alkyl substituents (R = -Bu-t (1a); -Pr-i (1b)) in the chemical vapor deposition (CVD) process as single-source precursors for both Bi2S3 and Bi. Despite similar structural chemistry and chemical composition, the minor differences in the polarity of the bonds in Bi-S-C units in (1a) and (1b) resulted in strikingly different results in their low-temperature (250 degrees C) decomposition. Whereas the CVD of Bi(SBut)(3) produced single-crystalline Bi2S3, elemental Bi was obtained from Bi(SPri)(3). The CVD deposits in both cases were unambiguously identified as Bi2S3 and Bi, as verified by X-ray diffraction (XRD) analysis, high-resolution X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The highly oriented and uniformly shaped two-dimensional (2D) Bi2S3 platelets were found to be single crystalline by selected area electron diffraction (SAED) performed during high-resolution transmission electron microscopy (HRTEM) and correlative 2D-SEM-Raman spectroscopy. The photoconductivity of Bi2S3 deposited on fluorine-doped tin oxide (FTO) was characterized by white light illumination that indicated the repetitive release of photoexcited charge carriers from deep-level defects.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Atamturk, Ufuk UNSPECIFIED orcid.org/0000-0002-5627-5375 UNSPECIFIED Jung, Eunhwan UNSPECIFIED UNSPECIFIED UNSPECIFIED Fischer, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-658144
DOI:	10.1021/acs.chemmater.2c01351
Journal or Publication Title:	Chem. Mat.
Volume:	34
Number:	16
Page Range:	S. 7344 - 7357
Date:	2022
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1520-5002
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SINGLE-SOURCE PRECURSORS; SULFIDE THIN-FILMS; TOPOTACTIC TRANSFORMATION; BI2S3; NANOFLOWERS; MORPHOLOGY; COMPLEXES; ANTIMONY; MOCVD; FIELD Multiple languages Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/65814