Termination of Ge surfaces with ultrathin GeS and GeS2 layers via solid-state sulfurization

文献情報

出版日 2017-11-29

DOI 10.1039/C7CP05990F

インパクトファクター 3.676

著者

Courtney Keiser, Shixuan Du, Hong-Jun Gao, Peter Sutter, Eli Sutter

原文を見る

要旨

Reactions of Ge with S vapor, of interest as a potential approach for forming thin passivation layers on Ge surfaces, have been studied by photoelectron spectroscopy and Raman spectroscopy. Exposure of Ge(100) and Ge(111) to S drives the formation of Ge sulfide near-surface layers. At low temperatures, the reaction products comprise a thin GeS interlayer terminated by near-surface GeS2. Above 400 °C, exposure to sulfur gives rise to single-phase GeS2 layers whose thickness increases with temperature. Arrhenius analysis of the GeS2 thickness yields an activation energy (0.63 ± 0.08) eV, close to the barrier that controls Ge oxidation by O radicals. XPS measurements after extended ambient exposure show a stable, ultrathin near-surface GeS2 without significant oxidation, indicating that Ge–sulfides may provide an effective surface passivation for Ge surfaces.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Termination of Ge surfaces with ultrathin GeS and GeS2 layers via solid-state sulfurization

文献情報

おすすめジャーナル

関連文献

Organic thin-film transistors with novel high-k polymers as dielectric layers

Novel pH-tunable thermoresponsive polymers displaying lower and upper critical solution temperatures

Self-assembled micelles of a multi-functional amphiphilic fusion (MFAF) peptide for targeted cancer therapy

Facile synthesis of photolabile dendritic-unit-bridged hyperbranched graft copolymers for stimuli-triggered topological transition and controlled release of Nile red

ATRP-based polymers with modular ligation points under thermal and thermomechanical stress

New poly(selenophene–thiophene) bearing π-conjugating spacers for polymer field-effect transistors and photovoltaic cells

One-pot synthesis of highly cross-linked fluorescent polyphosphazene nanoparticles for cell imaging

DFT investigations on the ring-opening polymerization of substituted cyclic carbonates catalyzed by zinc-{β-diketiminate} complexes

Contents list

CO2-induced reversible morphology transition from giant worms to polymersomes assembled from a block-random segmented copolymer

こちらもおすすめ

1-{3-[5-(エチルカルボンイル)-2,4-ジメチル-1H-ピロロール-3-基]プロパニル}ピペリジン-4-カルボン酸について、適用される法規ガイドラインは何ですか？

2,2-二氟-1,3-ベンゾジオキサン-5-カルボキシlic酸とは何ですか？

8-氯-4-色原酮の代替品はありますか？

エチル6,6-ジメチル-4,5,6,7-テトラヒドロ-1H-インドアゼー-3-カルボキシレートとは何ですか？

4-叔丁基-6-氯-嘧啶に適用される法規ガイドラインは何ですか？

維库溴铵杂质Bはどのように合成されますか？

2-(4-氟苄基)-吡咯烷の物理化学的性質は何ですか？

3-喹啉甲醛（2-チロール-8-エチル）は安全ですか？

エチル3-(ヒドロキシメチル)-1H-ピロール-2-カルボキシレートはどのように保存すればよいですか？

哌拉西林杂质Dは安全ですか？

掲載誌

Physical Chemistry Chemical Physics

おすすめ化合物

2-{3-[4-(3-Chlorophenyl)-1-piperazinyl]propyl}[1,2,4]triazolo[4,3-a]pyridin-3(2H)-one hydrochloride (1:1)

Sodium methacrylate

Glycol salicylate

6-Methyl-3-pyridinamine

Dimethyl 5-nitroisophthalate

おすすめサプライヤー