8 documents found, page 1 of 1
Perovskite Metal-Oxide-Semiconductor Structures for Interface Characterization
Cunha, J.M.V.; Barreiros, M. Alexandra; Curado, M.A.; Lopes, T.S.; Oliveira, K.; Oliveira, A.J.N.; Barbosa, J.R.S.; Vilanova, AntónioABSTRACT: Perovskite solar cells (PSCs) are one of the most promising photovoltaic technologies. Amongst several challenges, developing and optimizing efficient electron transport layers that can be up-scaled still remains a massive task. Admittance measurements on metal-oxide-semiconductor (MOS) devices allow to better understand the optoelectronic properties of the interface between perovskite and the charge ...
Perovskite Metal-Oxide-Semiconductor Structures for Interface Characterization
Cunha, J.M.V.; Barreiros, M. Alexandra; Curado, M.A.; Lopes, T.S.; Oliveira, K.; Oliveira, A.J.N.; Barbosa, J.R.S.; Vilanova, AntónioABSTRACT: Perovskite solar cells (PSCs) are one of the most promising photovoltaic technologies. Amongst several challenges, developing and optimizing efficient electron transport layers that can be up-scaled still remains a massive task. Admittance measurements on metal-oxide-semiconductor (MOS) devices allow to better understand the optoelectronic properties of the interface between perovskite and the charge ...
Metal-Oxide-Semiconductor devices for interface studies for perovskite technolo...
Cunha, J.M.V.; Barreiros, M. Alexandra; Teixeira, J.P.; Curado, M.A.; Lopes, T.S.; Oliveira, K.; Oliveira, A.J.N.; Barbosa, J.R.S.; Vilanova, António
Optoelectronic Study of Perovskites/SnO2 based Metal-Insulator-Semiconductor St...
Cunha, J.M.V.; Barreiros, M. Alexandra; Curado, M.A.; Lopes, T.S.; Oliveira, K.; Oliveira, A.J.N.; Vinhais, C.; Flandre, Denis; Teixeira, J.P.
High‐performance and industrially viable nanostructured siOx layers for interfa...
Cunha, José M. V.; Oliveira, Kevin; Lontchi, Jackson; Lopes, Tomás S.; Curado, Marco A.; Barbosa, João R. S.; Vinhais, Carlos; Chen, Wei-ChaoHerein, it is demonstrated, by using industrial techniques, that a passivation layer with nanocontacts based on silicon oxide (SiOx) leads to significant improvements in the optoelectronical performance of ultrathin Cu(In,Ga)Se2 (CIGS) solar cells. Two approaches are applied for contact patterning of the passivation layer: point contacts and line contacts. For two CIGS growth conditions, 550 and 500 °C, the SiO...
Perovskite metal–oxide–semiconductor structures for interface characterization
Cunha, José M. V.; Barreiros, M. Alexandra; Curado, Marco A.; Lopes, Tomás S.; Oliveira, Kevin; Oliveira, António J. N.; Barbosa, João R. S.Perovskite solar cells (PSCs) are one of the most promising photovoltaic technologies. Amongst several challenges, developing and optimizing efficient electron transport layers (ETLs) that can be up-scaled still remains a massive task. Admittance measurements on Metal-Oxide-Semiconductor (MOS) devices allow to better understand the optoelectronic properties of the interface between perovskite and the charge car...
Rear Optical Reflection and Passivation Using a Nanopatterned Metal/Dielectric ...
Lopes, Tomas S.; Cunha, Jose M. V.; Bose, Sourav; Barbosa, Joao R. S.; Borme, Jerome; Donzel-Gargand, Olivier; Rocha, Celia; Silva, RicardoCurrently, one of the main limitations in ultrathin Cu(In,Ga)Se 2 (CIGS) solar cells are the optical losses, since the absorber layer is thinner than the light optical path. Hence,light management, including rear optical reflection, and light trapping is needed. In this paper, we focus on increasing the rear optical reflection. For this, a novel structure based on having a metal interlayer in between the Mo rea...
Intestinal spirochetosis: first cases reported in Brazil and the use of immunoh...
Brito, T. de; Sandoval, Marina P.; Silva, Ana G.; Saad, R. C.; Colaiacovo, W.Colonization of the colon and rectum by intestinal spirochetes is detected for the first time in Brazil in 4 of 282 (1.41%) patients who had undergone sigmoidoscopy and/or colonoscopy with a histopathological diagnosis of chronic non specific-colitis. This frequency is probably understimated, since surgically obtained specimens were not considered in the present study. Histopathological diagnosis was performed ...