• 4468 Citations
  • 36 h-Index
1988 …2020

Research output per year

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Research Output at NOVA

1988

“Performances presented by a-Si:C:H (doped and undoped) films produced by a TCDDC system for PV applications”.

Martins, R. F. D. P., Guimarães, L., Fortunato, E. M. C., Vieira, M. M. D. A. C., Carvalho, N., Santos, M. & Ferreira, I., 1988, Proceedings of the eighth European Communities Photovoltaic Solar Energy Conference. p. 653-660 8 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1989

Electron paramagnetic resonance of defects in doped microcrystalline silicon

Lavado, M., Martins, R., Ferreira, I., Lavareda, G., Fortunato, E., Vieira, M. & Guimarães, L., 1989, In : Vacuum. 39, 7-8, p. 791-794 4 p.

Research output: Contribution to journalArticle

Transport in μc-Six: Cy:Oz:H films prepared by a TCDDC system

Martins, R., Willeke, G., Fortunato, E., Ferreira, I., Vieira, M., Santos, M., Maçarico, A. & Guimarães, L., 2 Dec 1989, In : Journal of Non-Crystalline Solids. 114, PART 2, p. 486-488 3 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Tunneling in vertical μcSi/aSixCyOz: H/μcSi heterostructures

Fortunato, E., Martins, R., Ferreira, I., Santos, M., Maçarico, A. & Guimarães, L., 3 Dec 1989, In : Journal of Non-Crystalline Solids. 115, 1-3, p. 120-122 3 p.

Research output: Contribution to journalArticle

23 Citations (Scopus)
1991

Engineering of plasma deposition systems used for producing large area a-Si:H devices

Martins, R., Ferreira, I., Carvalho, N. M. & Guimarães, L., 1991, In : Journal of Non-Crystalline Solids. 137-138, PART 2, p. 757-760 4 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
1992

Role of TCO layer on the performance of a-Si:H solar cells

Carvalho, N., Ferreira, I., Fortunato, E. M. C., Martins, R. F. D. P. & Guimarães, L., Oct 1992, Proceedings of the eleventh European Communities Photovoltaic Solar Energy Conference. p. 758 1 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1994

Engineering of the energy coupling in PECVD systems used to produce large area a-Si:H coatings

Martins, R. & Ferreira, I., 1994, In : Vacuum. 45, 10-11, p. 1107-1108 2 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Silicon oxycarbide microcrystalline layers produced by spatial separation techniques

Martins, R., Ferreira, I., Fortunato, E. & Vieira, M., 1994, Amorphous Silicon Technology - 1994. Vol. 336. p. 55-60 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)
1995

Nd-YAG laser induced crystallization on a-Si:H thin films

Carvalho, J., Ferreira, I., Fernandes, B., Fidalgo, J. & Martins, R., 1995, In : Materials Research Society Symposium Proceedings. 358, p. 915-920 6 p.

Research output: Contribution to journalConference article

2 Citations (Scopus)
8 Citations (Scopus)
1 Citation (Scopus)
1996

Correlation between electrical-optical and structural properties of microcrystalline silicon N type films

Martins, R., Macarico, A., Ferreira, I., Nunes, R., Bicho, A. & Fortunato, E., 1996, In : MRS Proceedings. 420, p. 807-812 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
1 Citation (Scopus)
4 Citations (Scopus)
1997

Highly conductive and highly transparent n-type microcrystalline silicon thin films

Martins, R., Maçarico, A., Ferreira, I., Nunes, R., Bicho, A. & Fortunato, E., 15 Jul 1997, In : THIN SOLID FILMS. 303, 1-2, p. 47-52 6 p.

Research output: Contribution to journalArticle

30 Citations (Scopus)
8 Citations (Scopus)

Role of the gas flow parameters on the uniformity of films produced by PECVD technique

Martins, R., Macarico, A., Ferreira, I. & Fortunato, E., 1997, In : MRS Proceedings. 467, p. 609-614 6 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
7 Citations (Scopus)
1998

Amorphous silicon sensors: From photo to chemical detection

Fortunato, E., Malik, A., Sêco, A., Ferreira, I. & Martins, R., May 1998, In : Journal of Non-Crystalline Solids. 227-230, PART 2, p. 1349-1353 5 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Investigation of the amorphous to microcrystalline phase transition of thin film silicon produced by PECVD

Martins, R., Maçarico, A., Ferreira, I., Nunes, R., Bicho, A. & Fortunato, E., 1 Apr 1998, In : THIN SOLID FILMS. 317, 1-2, p. 144-148 5 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
12 Citations (Scopus)

Undoped and doped crystalline silicon films obtained by Nd-YAG laser

Ferreira, I., Carvalho, J. F. & Martins, R., 1 Apr 1998, In : THIN SOLID FILMS. 317, 1-2, p. 140-143 4 p.

Research output: Contribution to journalConference article

6 Citations (Scopus)
1999
3 Citations (Scopus)

Nanocrystalline silicon carbon doped films prepared by hot wire technique

Ferreira, I., Fernandes, B. & Martins, R., 1999, In : Vacuum. 52, 1-2, p. 147-152 6 p.

Research output: Contribution to journalConference article

12 Citations (Scopus)

New metallurgical systems for electronic soldering applications

Gonçalves, C., Ferreira, J., Fortunato, E., Ferreira, I., Martins, R., Marvão, A. P., Martins, J. I., Harder, T. & Oppelt, R., 20 Apr 1999, In : Sensors And Actuators A-Physical. 74, 1, p. 70-76 7 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Performances of a-Si: H films produced by hot wire plasma assisted technique

Martins, R., Ferreira, I., Fernandas, B. & Fortunato, E., 1999, In : Vacuum. 52, 1-2, p. 203-208 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Performances of nano/amorphous silicon films produced by hot wire plasma assisted technique

Ferreira, I., Aguas, H., Mendes, L., Fernandes, F., Fortunato, E. & Martins, R., 1999, In : MRS Proceedings. 507, p. 607-612 6 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Role of the hot wire filament temperature on the structure and morphology of the nanocrystalline silicon p-doped films

Ferreira, I., Águas, H., Mendes, L. C. & Martins, R., Apr 1999, In : Applied Surface Science. 144-145, 0, p. 690-696 7 p.

Research output: Contribution to journalConference article

7 Citations (Scopus)
2000

Flexible large area thin film position sensitive detectors

Fortunato, E., Ferreira, I., Giuliani, F. & Martins, R., 15 Nov 2000, In : Sensors And Actuators A-Physical. 86, 3, p. 182-186 5 p.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Improvement of a-Si: H device stability and performances by proper design of the interfaces

Martins, R., Ferreira, I., Cabrita, A. & Fortunato, E., 1 May 2000, In : Journal of Non-Crystalline Solids. 266-269 B, p. 1094-1098 5 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Large area flexible amorphous silicon position sensitive detectors

Fortunato, E. M. C., Brida, D., Ferreira, I. M. M., Águas, H. M. B., Nunes, P., Cabrita, A., Giuliani, F., Nunes, Y., Maneira, M. J. P. & Martins, R. F. P., 2000, In : MRS Proceedings. 609, p. A1271-A1276 6 p.

Research output: Contribution to journalArticle

Nanocrystalline undoped silicon films produce by hot wire plasma assisted technique

Ferreira, I. M. M., Martins, R. F. D. P., Cabrita, A. M. F., Fortunato, E. M. C. & Vilarinho, P., 2000, In : MRS Proceedings. 609, p. A2241-A2246 6 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

New nanostructured silicon films grown by pecvd technique under controlled powder formation conditions

Martins, R., Ǎguas, H., Cabrita, A., Tonello, P., Silva, V., Ferreira, I., Portunato, E. & Guimares, L., 2000, In : Solar Energy. 69, SUPPLEMENT, p. 263-269 7 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

N-type silicon films produced by hot wire technique

Ferreira, I. M. M., Cabrita, A. M. F., Fortunato, E. M. C. & Martins, R. F. P., 2000, In : MRS Proceedings. 609, p. A651-A656 6 p.

Research output: Contribution to journalArticle

Performances of an optical ruler based on one-dimensional hydrogenated amorphous Si position-sensitive detectors produced using different metal contacts

Fortunato, E., Teodoro, P., Silva, V. M. A., Ferreira, I., Nunes, Y., Guimarães, N., Soares, F. M., Giuliani, F., Popovic, G., Brener, W. & Martins, R., 1 Jan 2000, In : Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties. 80, 4, p. 765-774 10 p.

Research output: Contribution to journalConference article

5 Citations (Scopus)

Role of the gas temperature and power to gas flow ratio on powder and voids formation in films grown by PECVD technique

Martins, R., Silva, V., Ferreira, I., Domingues, A. & Fortunato, E., Jan 2000, In : Vacuum. 56, 1, p. 25-30 6 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
6 Citations (Scopus)
12 Citations (Scopus)

Towards the improvement of the stability of a-Si:H pin devices

Martins, R., Aguas, H., Ferreira, I., Fortunato, E. & Guimares, L., 1 Dec 2000, In : Solar Energy. 69, SUPPLEMENT, p. 257-262 6 p.

Research output: Contribution to journalArticle

2001

Characterization of zinc oxide thin films deposited by rf magnetron sputtering on Mylar substrates

Fortunato, E., Nunes, P., Marques, A., Costa, D., Águas, H., Ferreira, I., Costa, M. E. V. & Martins, R., 2001, In : MRS Proceedings. 666, p. F3211-F3216 6 p.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)
1 Citation (Scopus)
Open Access
3 Citations (Scopus)

Nanostructured silicon films produced by PECVD

Martins, R., Águas, H., Silva, V., Ferreira, I., Cabrita, A. & Fortunato, E., 2001, In : MRS Proceedings. 664, p. A961-A966 6 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

New steps to improve a-Si: H device stability by design of the interfaces

Martins, R., Ferreira, I., Cabrita, A., Águas, H., Silva, V. & Fortunato, E., Mar 2001, In : Advanced Engineering Materials. 3, 3, p. 170-173 4 p.

Research output: Contribution to journalArticle

Porous silicon thin film gas sensor

Ferreira, I., Fortunato, E. & Martins, R. F. D. P., 2001, In : MRS Online Proceedings Library. 664, p. 2671-2676 6 p.

Research output: Contribution to journalArticle