Electronic to protonic conduction switching in Cu2O nanostructured porous films: the effect of humidity exposureElectronic supplementary information (ESI) available: Additional results related to the change in resistance of as-deposited and annealed CuO2 films on expose to humidity and dry air at various time intervals. See DOI: 10.1039/c7ra00383h
In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide (Cu 2 O) porous films when exposed to humidity. We also present a linear response at low relative humidity (RH < 48%). The Cu 2 O nanostr...
Saved in:
Main Authors | , , |
---|---|
Format | Journal Article |
Language | English |
Published |
19.04.2017
|
Online Access | Get full text |
Cover
Loading…
Abstract | In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide (Cu
2
O) porous films when exposed to humidity. We also present a linear response at low relative humidity (RH < 48%). The Cu
2
O nanostructured porous films were synthesized by spray pyrolysis of a Cu/Cu
2
O colloidal solution obtained by laser liquid medium ablation of a Cu target in water. The as-prepared and annealed Cu
2
O films were extensively characterized by scanning electron microscopy, atomic force microscopy, X-ray diffraction analysis, and Raman spectroscopy. The chemiresistor response to RH values from 7.5 to 84% was examined at a temperature of 22 °C and a pressure of 760 mmHg. At RH values below 48%, recombination of the majority charge carrier holes and electrons occurred owing to the dissociation of water molecules near the surface; the RH level was used to quantify the increase in resistance response (
R
Res
). Both devices revealed linear responses to RH (7.5-48%), with a maximum rate of 4.38 ± 0.16%/RH. As the RH increased beyond 48%, proton hopping between the physisorbed water molecules had a larger effect than the electronic conduction, and the response showed the opposite effect. The response exhibited a linear log-normal relationship with higher RH values (56-84%), with a maximum rate of −0.0694 ± 0.002 log(%)/RH. The mechanism for switching the resistive response trend of the Cu
2
O films is discussed.
In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide (Cu
2
O) porous films when exposed to humidity. |
---|---|
AbstractList | In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide (Cu
2
O) porous films when exposed to humidity. We also present a linear response at low relative humidity (RH < 48%). The Cu
2
O nanostructured porous films were synthesized by spray pyrolysis of a Cu/Cu
2
O colloidal solution obtained by laser liquid medium ablation of a Cu target in water. The as-prepared and annealed Cu
2
O films were extensively characterized by scanning electron microscopy, atomic force microscopy, X-ray diffraction analysis, and Raman spectroscopy. The chemiresistor response to RH values from 7.5 to 84% was examined at a temperature of 22 °C and a pressure of 760 mmHg. At RH values below 48%, recombination of the majority charge carrier holes and electrons occurred owing to the dissociation of water molecules near the surface; the RH level was used to quantify the increase in resistance response (
R
Res
). Both devices revealed linear responses to RH (7.5-48%), with a maximum rate of 4.38 ± 0.16%/RH. As the RH increased beyond 48%, proton hopping between the physisorbed water molecules had a larger effect than the electronic conduction, and the response showed the opposite effect. The response exhibited a linear log-normal relationship with higher RH values (56-84%), with a maximum rate of −0.0694 ± 0.002 log(%)/RH. The mechanism for switching the resistive response trend of the Cu
2
O films is discussed.
In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide (Cu
2
O) porous films when exposed to humidity. |
Author | Ray, Suprakas Sinha Dhonge, Baban P Mwakikunga, Bonex |
AuthorAffiliation | DST-CSIR National Centre for Nanostructured Materials Council for Scientific and Industrial Research Applied Chemistry Department University of Johannesburg |
AuthorAffiliation_xml | – name: University of Johannesburg – name: DST-CSIR National Centre for Nanostructured Materials – name: Applied Chemistry Department – name: Council for Scientific and Industrial Research |
Author_xml | – sequence: 1 givenname: Baban P surname: Dhonge fullname: Dhonge, Baban P – sequence: 2 givenname: Suprakas Sinha surname: Ray fullname: Ray, Suprakas Sinha – sequence: 3 givenname: Bonex surname: Mwakikunga fullname: Mwakikunga, Bonex |
BookMark | eNqFkEtLAzEUhUdR8NWNe-G600XrPHS03Umt2FUXdSvlmrnTiWSSIY9q_703VVQQNBCScA7nOzcHyY42mpLkOEsHWVoML8S1xTQtbopmO9nP08uyn6flcC_pOfeS8iqvsrzM9reeJoqEt0ZLAd5AZ43f3IXRVRBeGg3uVXrRSL0EqWEc8hlo1MZ5y3qwVEFnrAkOaqlaNwLfEFBdcyqYGprQykr6NdBbZxzbf_Bc6DpFLWmPds3htbEtbpBnk_n0HHCFUuGzohHcVhzCCiqw5ILyjk-FnuncOiJFg3pJsSIbpPOoBcUC6PoVMVpGL-q4NaHixzjM8o_SwMhNP4ppX5Wju-JmKC2ghxVaGef0so0cT3aFyg1gTgR3s-kIfv_9UbJbs4d6n-dhcnI_eRw_9K0Ti87KlgdffNuL__XTv_RFV9XFOyYhrWs |
ContentType | Journal Article |
DOI | 10.1039/c7ra00383h |
DatabaseTitleList | |
DeliveryMethod | fulltext_linktorsrc |
EISSN | 2046-2069 |
EndPage | 21712 |
ExternalDocumentID | c7ra00383h |
GroupedDBID | -JG 0-7 AAEMU ABGFH AEFDR AFVBQ AGSTE AUDPV BSQNT C6K EE0 EF- H~N J3I R7C R7E R7G RCNCU RPMJG RRC RSCEA SLH SMJ |
ID | FETCH-rsc_primary_c7ra00383h3 |
IngestDate | Thu May 30 17:50:16 EDT 2019 Mon Jan 28 17:15:42 EST 2019 |
IsPeerReviewed | true |
IsScholarly | true |
Issue | 35 |
Language | English |
LinkModel | OpenURL |
MergedId | FETCHMERGED-rsc_primary_c7ra00383h3 |
Notes | 2 films on expose to humidity and dry air at various time intervals. See DOI Electronic supplementary information (ESI) available: Additional results related to the change in resistance of as-deposited and annealed CuO 10.1039/c7ra00383h |
PageCount | 1 |
ParticipantIDs | rsc_primary_c7ra00383h |
ProviderPackageCode | J3I R7E RRC R7G AEFDR RPMJG -JG AGSTE RCNCU AUDPV EF- SLH BSQNT EE0 SMJ RSCEA AFVBQ C6K H~N 0-7 ABGFH AAEMU R7C |
PublicationCentury | 2000 |
PublicationDate | 2017-April-19 |
PublicationDateYYYYMMDD | 2017-04-19 |
PublicationDate_xml | – month: 04 year: 2017 text: 2017-April-19 day: 19 |
PublicationDecade | 2010 |
PublicationYear | 2017 |
SSID | ssj0000651261 |
Score | 4.083848 |
Snippet | In this paper, we present the first experimental evidence for electronic to protonic conduction switching in p-type semiconducting nanostructured cuprous oxide... |
SourceID | rsc |
SourceType | Enrichment Source Publisher |
StartPage | 2173 |
Title | Electronic to protonic conduction switching in Cu2O nanostructured porous films: the effect of humidity exposureElectronic supplementary information (ESI) available: Additional results related to the change in resistance of as-deposited and annealed CuO2 films on expose to humidity and dry air at various time intervals. See DOI: 10.1039/c7ra00383h |
Volume | 7 |
hasFullText | 1 |
inHoldings | 1 |
isFullTextHit | |
isPrint | |
link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnZ1Nb9NAEIaXtly4oCKoaKFoDhxAwSWJ7VjJDWhQiwQ5tEi9oGjt3ahWEzvyR1vx6zuzY3ttJUjAJXL8OdY83n29npkV4q30tDeQrnZ0iI-b5wfKka4vnUHk-mMZhdhFmGiLH6Ozn963K_9qZ_dDK2qpLMKT6PfWvJL_8SquQ79Sluw_eLY5Ka7AZfQv_qKH8fevfDy1c9ighKSSC2YZX3EVF4Xt5XdxwdGSlN1XDme9RCYpF40tKfQc5TcFwS7i5SrvxngYGVmuYkU6Xd-vUxpLbF0xp_lAOfY8o-TBJg2SROv04pzGG-StjJeUnGXGH5WKq5FHfMcvl-aLxVKS5K0EMGchc4pNTsKWWh0KVMgdpU14mVZVddmEBK7CW5oN2Xj66mGsNHOBNIbT3grtk3FGeZu3MjNBv0W80qZURob-yE-wydS909m5GR8xJQKoPmoUZJK-abrNkPnpdZrwXPSfZUjdh_1MxjFz5TqTNzLvXcTJddPhfb9DmX6DrSpPc50m-r492IIdOFV15CZdm0Z52PdGyCBPL1P3IEHrQXH9TnfA87RU0gL_csz4Rr-19ba6dcDtxl3xeBiM_aA1gMC6A8XbaFDX4HXHH-0hqJyyekYbo5wu98XT6pUHPjG_z8SOTp4_-mVJgiKFml2w7ELDLsQJELvQZReYXTDunwACBEwupAuoAYBNcqFDLrTIhXfI7XtoqJ2AZRYqZqFilqymSzKzZKJllgxoMwtIIdTMAjHLRgNekpmlszUm097ILCCzIAuomAViFiyzgMwCMjuBTUe8EMdfp5dfzhx0x3zNBWXmdrN7IPYSxPClAInNZaQX_ZHUobdQLir5sB-F-LohAx2Nw0NxsP0ch-Jo-4b5Wi2O_nTUK_HEAv9a7KEz9THq7SJ8YzB7AH8z7Wc |
link.rule.ids | 315,786,790,870,27957,27958 |
linkProvider | Directory of Open Access Journals |
openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Electronic+to+protonic+conduction+switching+in+Cu2O+nanostructured+porous+films%3A+the+effect+of+humidity+exposureElectronic+supplementary+information+%28ESI%29+available%3A+Additional+results+related+to+the+change+in+resistance+of+as-deposited+and+annealed+CuO2+films+on+expose+to+humidity+and+dry+air+at+various+time+intervals.+See+DOI%3A+10.1039%2Fc7ra00383h&rft.au=Dhonge%2C+Baban+P&rft.au=Ray%2C+Suprakas+Sinha&rft.au=Mwakikunga%2C+Bonex&rft.date=2017-04-19&rft.eissn=2046-2069&rft.volume=7&rft.issue=35&rft.spage=2173&rft.epage=21712&rft_id=info:doi/10.1039%2Fc7ra00383h&rft.externalDocID=c7ra00383h |