Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces
Triboelectric nanogenerators (TENGs) are an autonomous and sustainable power-generation technology, seeking to harvest small vibrations into electricity. Here, by achieving molecular control of oxide-free Si crystals and using conductive atomic force microscopy, we address key open questions and use...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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ELSEVIER
2022
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| Online Access: | http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/90476 |
| _version_ | 1848765384497299456 |
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| author | Lyu, Xin Ferrie, Stuart Pivrikas, A. MacGregor, M. Ciampi, Simone |
| author_facet | Lyu, Xin Ferrie, Stuart Pivrikas, A. MacGregor, M. Ciampi, Simone |
| author_sort | Lyu, Xin |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Triboelectric nanogenerators (TENGs) are an autonomous and sustainable power-generation technology, seeking to harvest small vibrations into electricity. Here, by achieving molecular control of oxide-free Si crystals and using conductive atomic force microscopy, we address key open questions and use this knowledge to demonstrate zero-applied-bias current densities as high as 109 A/m2. Key to achieve this output, is to use a proton-exchangeable organic monolayer that simultaneously introduces a sufficiently high density of surface states (assessed as changes to carrier recombination velocities) coupled to a strong surface dipole in the form of a surface alkoxide anion (Si–monolayer–O−). We also demonstrate that the DC output of a Schottky diode TENG does not track the energy released as friction. This removes the complexity of controlling an unavoidable stick–slip motion, bypassing the requirement of aligning sliding motion and substrate topographical features. We reveal that there is no apparent correlation between the current of a static (biased) junction and the tribocurrent of the same junction when under motion and unbiased. |
| first_indexed | 2025-11-14T11:34:24Z |
| format | Journal Article |
| id | curtin-20.500.11937-90476 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:34:24Z |
| publishDate | 2022 |
| publisher | ELSEVIER |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-904762023-03-20T02:22:50Z Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces Lyu, Xin Ferrie, Stuart Pivrikas, A. MacGregor, M. Ciampi, Simone Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Triboelectric nanogenerators Schottky diodes Stick-slip friction Silicon surface chemistry Organic monolayers SELF-ASSEMBLED MONOLAYERS STICK-SLIP FRICTION AQUEOUS-SOLUTIONS SI(111) SURFACES SILICON FUNCTIONALIZATION ELECTRODES CHEMISTRY ELECTROCHEMISTRY CONDUCTIVITY Triboelectric nanogenerators (TENGs) are an autonomous and sustainable power-generation technology, seeking to harvest small vibrations into electricity. Here, by achieving molecular control of oxide-free Si crystals and using conductive atomic force microscopy, we address key open questions and use this knowledge to demonstrate zero-applied-bias current densities as high as 109 A/m2. Key to achieve this output, is to use a proton-exchangeable organic monolayer that simultaneously introduces a sufficiently high density of surface states (assessed as changes to carrier recombination velocities) coupled to a strong surface dipole in the form of a surface alkoxide anion (Si–monolayer–O−). We also demonstrate that the DC output of a Schottky diode TENG does not track the energy released as friction. This removes the complexity of controlling an unavoidable stick–slip motion, bypassing the requirement of aligning sliding motion and substrate topographical features. We reveal that there is no apparent correlation between the current of a static (biased) junction and the tribocurrent of the same junction when under motion and unbiased. 2022 Journal Article http://hdl.handle.net/20.500.11937/90476 10.1016/j.nanoen.2022.107658 English http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/FT190100148 http://purl.org/au-research/grants/arc/FT200100301 ELSEVIER restricted |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Triboelectric nanogenerators Schottky diodes Stick-slip friction Silicon surface chemistry Organic monolayers SELF-ASSEMBLED MONOLAYERS STICK-SLIP FRICTION AQUEOUS-SOLUTIONS SI(111) SURFACES SILICON FUNCTIONALIZATION ELECTRODES CHEMISTRY ELECTROCHEMISTRY CONDUCTIVITY Lyu, Xin Ferrie, Stuart Pivrikas, A. MacGregor, M. Ciampi, Simone Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title | Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title_full | Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title_fullStr | Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title_full_unstemmed | Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title_short | Sliding Schottky diode triboelectric nanogenerators with current output of 10^9 A/m2 by molecular engineering of Si(211) surfaces |
| title_sort | sliding schottky diode triboelectric nanogenerators with current output of 10^9 a/m2 by molecular engineering of si(211) surfaces |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Triboelectric nanogenerators Schottky diodes Stick-slip friction Silicon surface chemistry Organic monolayers SELF-ASSEMBLED MONOLAYERS STICK-SLIP FRICTION AQUEOUS-SOLUTIONS SI(111) SURFACES SILICON FUNCTIONALIZATION ELECTRODES CHEMISTRY ELECTROCHEMISTRY CONDUCTIVITY |
| url | http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/DP190100735 http://purl.org/au-research/grants/arc/DP190100735 http://hdl.handle.net/20.500.11937/90476 |