Development of a ChemFET sensor with molecular films of porphyrins as sensitive layer

Andersson, Marcus; Holmberg, Martin; Lundström, Ingemar; Spetz, Anita Lloyd; Mårtensson, Per; Paolesse, Roberto; Falconi, Christian; Proietti, Emanuela; Natale, Corrado Di; D’Amico, A.

doi:10.1016/s0925-4005(01)00691-8

Cited by 48 publications

(22 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Reliability is one of the major issues slowing the development of chemiresistors and CP-based sensing FETs (33). Some CP films are not very stable once a current has passed through, especially highly doped electrochemically grown films.…”

Section: The Role Of Gate Biasmentioning

confidence: 99%

Organic Thin-Film Transistors as Plastic Analytical Sensors

Torsi¹,

Dodabalapur²

2005

Anal. Chem.

145

View full text Add to dashboard Cite

Section: The Role Of Gate Biasmentioning

confidence: 99%

Organic Thin-Film Transistors as Plastic Analytical Sensors

Torsi¹,

Dodabalapur²

2005

Anal. Chem.

145

View full text Add to dashboard Cite

“…However, a better comprehension of the microscopic behaviour would allow a deeper exploitation of the properties of the layer in view of most efficient electronic devices [7]. Consequently, there is now a development of more accurate deposition methods, able to control with a higher level of accuracy the thickness and the morphology of the single layer [8].…”

Section: Originalmentioning

confidence: 99%

Optical anisotropy and gas sensing properties of ordered porphyrin films

Bussetti

Corradini

Goletti

et al. 2005

Physica Status Solidi (b)

View full text Add to dashboard Cite

Ordered films of porphyrins are routinely obtained by Langmuir-Blodgett technique, with a thickness control at the level of a single monolayer. The study of their optical anisotropy by reflectance anisotropy spectroscopy (RAS) has evidenced an interesting modification of the spectral line shape around the Soret band of the porphyrin layer after a certain critical thickness has been deposited onto the substrate. This finding has been connected to a structural modification of the film, although a detailed model was lacking until now. Recently, a new theoretical study based on the local field interaction has proposed to explain the RAS spectra in terms of the orientation of the molecules in a layer, that would change from layer to layer as the system is assembled. In order to test the model, we have collected new experimental data studying the modification of the optical anisotropy during exposure of the film to a gas (ethanol), mimicking the application for gas sensing analysis. The results show that the model is adequate to describe the real system: reordering of the layer during or after growth originates the anomalous spectra

show abstract

“…Many types of electrical transducer platforms utilizing organic semiconductors have been proposed and engineered to detect chemical compounds. The majority of chemical sensors are built on conventional platforms of resistors [1][2][3][4] and field-effect transistors [5][6][7][8][9]. The indication of chemical detection of these devices is mainly the change in resistance.…”

Section: Introductionmentioning

confidence: 99%