Investigation of photo-induced effect on electrical properties of Au/PPy/n-Si (MPS) type schottky barrier diodes

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dc.contributor.authorErsoz, Gulcin
dc.contributor.authorYucedag, Ibrahim
dc.contributor.authorBayrakdar, Sumeyye
dc.contributor.authorAltindal, Semsettin
dc.contributor.authorGumus, Ahmet
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2017
dc.departmentNiğde ÖHÜ
dc.description.abstractAu/PPy/n-Si (MPS) type Schottky barrier diodes (SBDs) were produced and their current-voltage (I-V) characteristics were measured in the positive and negative bias regions at 300 K. The basic electronic quantities such as reverse-saturation current (I-o ), ideality factor (n), zero-bias barrier height (Phi(B0) ), series (R-s) and shunt resistances (R-sh) were obtained by using I-V data in total darkness and illumination (100 W/m(2)). The values of these parameters were found as 7.79 x 10(-9) A, 5.41, 0.75 eV, 1 k Omega and 130 M Omega in dark) and 4 x 10(-9) A, 4.89, 0.77 eV, 0.9 k Omega and 1.02 M Omega under illumination), respectively. Also the energy density distribution behaviors of surface states (N-ss ) have been acquired by calculation of effective barrier height (Phi(e) ) and ideality factor n (V) depending on voltage in total darkness and illumination. The values of N (ss) show an exponentially increase from the mid-gap of Si to the lower part of conduction band (E-c ) for two conditions. The possible current conduction mechanisms were determined by plotting of the double logarithmic I-V plots in the positive voltage zone and the value of current was found proportional to voltage (I similar to V (m) ). The high values of n and R-s were ascribed to the certain density distribution of N-ss localized at semiconductor /PPy interface, surface conditions, barrier inequality, the thickness of PPy interlayer and its roughness. The open-circuit voltage of the photodiode was found as 0.36 V under 100 W/m(2) illumination level. This is evidence that the fabricated sample is very sensitive to illumination. Therefore, it can be put into practice in optoelectronic industries as a photodiode or solar cells.
dc.identifier.doi10.1007/s10854-016-6326-z
dc.identifier.endpage6420
dc.identifier.issn0957-4522
dc.identifier.issn1573-482X
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85009277250
dc.identifier.scopusqualityQ2
dc.identifier.startpage6413
dc.identifier.urihttps://dx.doi.org/10.1007/s10854-016-6326-z
dc.identifier.urihttps://hdl.handle.net/11480/3500
dc.identifier.volume28
dc.identifier.wosWOS:000399709300008
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherSPRINGER
dc.relation.ispartofJOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleInvestigation of photo-induced effect on electrical properties of Au/PPy/n-Si (MPS) type schottky barrier diodes
dc.typeArticle

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