O2 and organic semiconductors: Electronic effects

Nayak, Pabitra K.; Rosenberg, Ron; Barnea-Nehoshtan, Lee

doi:10.1016/j.orgel.2013.01.020

Cited by 45 publications

(44 citation statements)

References 47 publications

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“…In both organic and inorganic materials band gap states can originate from grain boundaries [37][38][39][40] . In both organic and inorganic materials band gap states can originate from grain boundaries [37][38][39][40] .…”

Section: Resultsmentioning

confidence: 99%

“…In both organic and inorganic materials band gap states can originate from grain boundaries [37][38][39][40] . These gap states are responsible for trapping mobile carriers and, thus, decrease carrier mobility 39 Table 1 and Figure S1) and that the workf unction of all surfaces is ~ 4 eV. Therefore, a larger density of misaligned grain boundaries leads to a larger density of gap states.…”

Section: Resultsmentioning

confidence: 99%

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The effect of structural order on solar cell parameters, as illustrated in a SiC-organic junction model

Nayak

Barnea-Nehoshtan

Kim

et al. 2013

Energy Environ. Sci.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The effect of structural order on solar cell parameters, as illustrated in a SiC-organic junction model

Nayak

Barnea-Nehoshtan

Kim

et al. 2013

Energy Environ. Sci.

Self Cite

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“…Indeed, the workfunctions of some of the commonly used electroactive MPcs (LuPc 2 , CuPc, CoPc, Cu(F 16 Pc)) match the Au or ITO workfunctions. Moreover, in a bilayer heterostructure of two MPcs, the dense molecular packing of top layer protects the layer below from irreversible chemisorption of O 2 and H 2 O, which is particularly important to maintain n-type or ambipolar sensing properties of MPc heterostructures [ 50 , 51 ] and from oxidation by strong oxidizing gases (ozone and NO 2 ) [ 52 ]. Above all, however, the main advantage of using MPc heterostructures instead of a homogeneous MPc film is to benefit from the organic heterojunction effects in which free charge carriers are accumulated at the junction.…”

Section: Suitability Of Phthalocyanines In Heterostructure Based Gmentioning

confidence: 99%

Organic Heterojunction Devices Based on Phthalocyanines: A New Approach to Gas Chemosensing

Kumar

Meunier‐Prest

Bouvet

2020

Sensors

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Organic heterostructures have emerged as highly promising transducers to realize high performance gas sensors. The key reason for such a huge interest in these devices is the associated organic heterojunction effect in which opposite free charges are accumulated at the interface making it highly conducting, which can be exploited in producing highly sensitive and faster response kinetics gas sensors. Metal phthalocyanines (MPc) have been extensively studied to fabricate organic heterostructures because of the large possibilities of structural engineering which are correlated with their bulk thin film properties. Accordingly, in this review, we have performed a comprehensive literature survey of the recent researches reported about MPc based organic heterostructures and their application in gas sensors. These heterostructures were used in Organic Field-Effect Transistor and Molecular Semiconductor—Doped Insulator sensing device configurations, in which change in their electrical properties such as field-effect mobility and saturation current in the former and current at a fixed bias in the latter under redox gases exposure were assessed to determine the chemosensing performances. These sensing devices have shown very high sensitivity to redox gases like nitrogen dioxide (NO2), ozone and ammonia (NH3), which monitoring is indispensable for implementing environmental guidelines. Some of these sensors exhibited ultrahigh sensitivity to NH3 demonstrated by a detection limit of 140 ppb and excellent signal stability under variable humidity, making them among the best NH3 sensors.

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“…It has been reported that oxygen exposure can influence the decay rate of inversion layer in P(VDF-TrFE)/p-Si FETs. 25 Atmosphere exposure, such as UV/ozone, 26 water 27 and oxygen, 28 can also influence electrical characteristics in organic semiconductor devices. …”

Section: -8mentioning

confidence: 99%

Piezoresponse force microscopy study on ferroelectric polarization of ferroelectric polymer thin films with various structural configurations

Zhang

Weng

et al. 2015

AIP Advances

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Ferroelectric polymer-based memory devices have attracted much attention due to their potential in low-cost flexible memories. However, bad retention property of recorded logic states limited their applications. Though mechanisms of retention degradation in ferroelectric memories are complicated and still an open question, depolarization in ferroelectric polymer layer was regarded as the main influencing factor. Here we reported our piezoresponse force microscopy (PFM) study of retention property of polarization states on various ferroelectric polymer based structures. PFM results indicated that, as for ferroelectric/semiconductor structure and ferroelectric/insulator/semiconductor structure with thin insulating layer, both positive and negative polarization states could retain for a relatively long time. Mechanisms of good retention of polarization states were discussed. The discrepancy in bad retention of logic states and good polarization retention of ferroelectric layer was also analyzed.

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O2 and organic semiconductors: Electronic effects

Cited by 45 publications

References 47 publications

The effect of structural order on solar cell parameters, as illustrated in a SiC-organic junction model

The effect of structural order on solar cell parameters, as illustrated in a SiC-organic junction model

Organic Heterojunction Devices Based on Phthalocyanines: A New Approach to Gas Chemosensing

Piezoresponse force microscopy study on ferroelectric polarization of ferroelectric polymer thin films with various structural configurations

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