| 1. Identity statement | ||||
| Reference Type | Conference Abstract (Conference Proceedings) | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3PGF4RE | |||
| Repository | sid.inpe.br/mtc-m21b/2017/08.25.17.08 (restricted access) | |||
| Last Update | 2017:10.03.11.56.44 (UTC) simone | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2017/08.25.17.08.24 | |||
| Metadata Last Update | 2018:06.04.02.27.45 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | PirralhoPeSoOkFoRaAb:2017:TrNePo | |||
| Title | Transition from negative to positive photoconductivity in p-type Pb1-xEuxTe films  | |||
| Year | 2017 | |||
| Access Date | 2024, May 18 | |||
| Secondary Type | PRE CN | |||
| Number of Files | 1 | |||
| Size | 1035 KiB | |||
| 2. Context | ||||
| Author | 1 Pirralho, Marília de J. P. 2 Peres, Marcelo L. 3 Soares, Demétrio A. W. 4 Okasaki, Anderson K. 5 Fornari, Celso Israel 6 Rappl, Paulo Henrique de Oliveira 7 Abramof, Eduardo | |||
| Resume Identifier | 1 2 3 4 5 6 8JMKD3MGP5W/3C9JJ37 7 8JMKD3MGP5W/3C9JGUH | |||
| Group | 1 2 3 4 5 CMS-ETES-SESPG-INPE-MCTIC-GOV-BR 6 LABAS-COCTE-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 2 3 4 5 Instituto Nacional de Pesquisas Espaciais (INPE) 6 Instituto Nacional de Pesquisas Espaciais (INPE) 7 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 3 4 5 celso.fornari@inpe.br 6 paulo.rappl@inpe.br 7 eduardo.abramof@inpe.br | |||
| Conference Name | Brazilian Workshop on Semiconductor Physics, 18 (BWSP) | |||
| Conference Location | Maresias, SP | |||
| Date | 14-18 ago. | |||
| Book Title | Resumos | |||
| History (UTC) | 2017-08-25 17:08:49 :: simone -> administrator :: 2017 2017-09-18 04:40:57 :: administrator -> simone :: 2017 2017-10-03 11:56:44 :: simone -> administrator :: 2017 2018-01-09 11:47:05 :: administrator -> simone :: 2017 2018-01-09 18:26:59 :: simone -> administrator :: 2017 2018-06-04 02:27:45 :: administrator -> simone :: 2017 | |||
| 3. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | The phenomenon of photoconductivity has been used as an important tool to investigate the presence of additional states within the band structure of semiconductors [1] and has provided basic knowledge that allowed the development of photodetector and sensor devices along the last decades [2]. We investigated the photoconductivity effect in p-type Pb1-xEuxTe films for x=0.01, 0.02, 0.03, 0.05 and 0.06 at T=300K. The measurements revealed a clear transition from negative to positive photoconductivity as the Eu content x is increased at room temperature. This transition is related to the metal-insulator transition that occurs due to the disorder originated from the introduction of Eu atoms and it is an Anderson transition. Our investigation found that, from the potential application point of view, the sample x=0.06 is more suitable, i.e. it presents an almost noise free signal and the higher photoconductivity amplitude response observed. The photoconductive for the sample with x=0.06 was further investigated in the temperature range of 77 300K and, surprisingly, multiple additional transitions were observed with amplitudes that reached around 200 times the original value before illumination. We show that this anomalous behavior is a consequence of the generation and recombination rates between the bands and the 4f level and a defect level located inside the bandgap. The main goal of this work is to make a prospective study of NPC effect in p-type Pb1-xEuxTe films in both sides of the metal-insulator transition aiming to possible new applications in the development of photonic devices that operate from low temperature up to room temperature. Acknowledgments: The authors would like to acknowledge CAPES and FAPEMIG for support. References: [1] M. M. Furchi et al, Nano Letters 14, 6165-6170 (2014); [2] R. Jaramillo et al, Jour. Appl. Phys. 119, 035101 (2016). | |||
| Area | FISMAT | |||
| Arrangement 1 | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Transition from negative... | |||
| Arrangement 2 | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CMS > Transition from negative... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
| |||
| 4. Conditions of access and use | ||||
| Language | en | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | deny from all and allow from 150.163 | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Linking | 8JMKD3MGP3W34P/3NAEMRH | |||
| Mirror Repository | sid.inpe.br/mtc-m21b/2013/09.26.14.25.22 | |||
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 8JMKD3MGPCW/3F358GL | |||
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.57.50 3 sid.inpe.br/mtc-m21/2012/07.13.14.44.57 2 | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject targetfile tertiarytype type url volume | |||
| 7. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||