20 documents found, page 1 of 2
Sub-Bandgap Sensitization of Perovskite Semiconductors via Colloidal Quantum Do...
Ribeiro, Guilherme; Ferreira, G.; Menda, U.D.; Alexandre, Miguel; Brites, Maria João; Barreiros, M. Alexandra; Jana, S.; Águas, Hugo; Martins, RodrigoABSTRACT: By taking advantage of the outstanding intrinsic optoelectronic properties of perovskite-based photovoltaic materials, together with the strong near-infrared (NIR) absorption and electronic confinement in PbS quantum dots (QDs), sub-bandgap photocurrent generation is possible, opening the way for solar cell efficiencies surpassing the classical limits. The present study shows an effective methodology ...
Sub-Bandgap Sensitization of Perovskite Semiconductors via Colloidal Quantum Do...
Ribeiro, Guilherme; Ferreira, G.; Menda, U.D.; Alexandre, Miguel; Brites, Maria João; Barreiros, M. Alexandra; Jana, S.; Águas, Hugo; Martins, RodrigoABSTRACT: By taking advantage of the outstanding intrinsic optoelectronic properties of perovskite-based photovoltaic materials, together with the strong near-infrared (NIR) absorption and electronic confinement in PbS quantum dots (QDs), sub-bandgap photocurrent generation is possible, opening the way for solar cell efficiencies surpassing the classical limits. The present study shows an effective methodology ...
Design of experiments optimization of fluorine-doped tin oxide films prepared b...
Pinheiro, X.L.; Vilanova, A.; Mesquita, D.; Monteiro, M.; Eriksson, J.A.M.; Barbosa, J.R.S.; Matos, C.; Oliveira, A.J.N.; Oliveira, K.; Capitão, J.Transparent conducting oxides (TCOs) have witnessed an ever-expanding use in our lives through many optoelectronic applications, namely photovoltaic (PV) devices. Indium-tin oxide (ITO) is the most used and studied TCO, but it lacks thermal and chemical stability and indium is a scarce and toxic element. Fluorine-doped tin oxide (FTO) emerged as the most promising alternative to ITO, presenting better thermal a...
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 ...
In-Depth Inhomogeneities in CIGS Solar Cells: Identifying Regions for Performan...
Corregidor, V.; Barreiros, M. Alexandra; Salomé, P.M.P.; Alves, L. C.ABSTRACT: When considering materials to be used as active layers in solar cells, an important required parameter is the proper knowledge of their elemental composition. It should be heavily controlled during growth in order to obtain the desired band gap and to decrease the recombination defects and then increase the solar cell electrical performance. Ion beam analytical (IBA) techniques and, in particular, par...
Nuclear microprobe: the tool to characterize new materials for energy conversio...
Corregidor, V.; Alves, L. C.; Barreiros, M. Alexandra; Salomé, P.M.P.
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.
O poder da nanofabricação: substratos de alta performance para células solares ...
Teixeira, J.T.; Lopes, T.S.; Oliveira, K.; Curado, M.A.; Cunha, J.M.V.; Ribeiro, R.M.; Oliveira, A.J.N.; Barbosa, J.R.S.; Violas, A.; Rocha, C.RESUMO: O grupo de Nanofabrication for Optoelectronic Applications -NOA- inserido no International Iberian Nanotechnology Laboratory (INL) tem focado grande parte da sua investigação e operações no desenvolvimento de substratos de alta performance, baseados em diferentes esquemas de manipulação da luz para aplicação em células solares de Cu(In,Ga)Se2 (CIGS). Estes substratos baseiam-se na inserção de uma camada...