Search Results - "Leitão, Joaquim P."

Cu(In,Ga)Se2-based solar cells for space applications: proton irradiation and annealing recovery by Candeias, Maria B., Fernandes, Tiago V., Falcão, Bruno P., Cunha, António F., Cunha, José M. V., Barbosa, João, Teixeira, Jennifer P., Fernandes, Paulo A., Peres, Marco, Lorenz, Katharina, Salomé, Pedro M. P., Leitão, Joaquim P.

“…In this work, we present an experimental study of a Cu(In,Ga)Se 2 (CIGS)-based solar cell (SC), irradiated with protons of energy 80 and 180 keV and with…”
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A comparison between thin film solar cells made from co-evaporated CuIn1-xGaxSe2 using a one-stage process versus a three-stage process by Salomé, Pedro M.P., Fjällström, Viktor, Szaniawski, Piotr, Leitão, Joaquim P., Hultqvist, Adam, Fernandes, Paulo A., Teixeira, Jennifer P., Falcão, Bruno P., Zimmermann, Uwe, da Cunha, António F., Edoff, Marika

“…Until this day, the most efficient Cu(In,Ga)Se2 thin film solar cells have been prepared using a rather complex growth process often referred to as three‐stage…”
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Passivation of Interfaces in Thin Film Solar Cells: Understanding the Effects of a Nanostructured Rear Point Contact Layer by Salomé, Pedro M. P., Vermang, Bart, Ribeiro‐Andrade, Rodrigo, Teixeira, Jennifer P., Cunha, José M. V., Mendes, Manuel J., Haque, Sirazul, Borme, Jêrome, Águas, Hugo, Fortunato, Elvira, Martins, Rodrigo, González, Juan C., Leitão, Joaquim P., Fernandes, Paulo A., Edoff, Marika, Sadewasser, Sascha

“…Thin film solar cells based in Cu(In,Ga)Se2 (CIGS) are among the most efficient polycrystalline solar cells, surpassing CdTe and even polycrystalline silicon…”
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Microwave Synthesis of Silver Sulfide and Silver Nanoparticles: Light and Time Influence by Magalhães Sousa, David, Chiappim, William, P. Leitão, Joaquim, Lima, João Carlos, Ferreira, Isabel

“…Silver sulfide (Ag 2 S) is a low band gap material, which absorbs near-infrared light and is of great importance in areas such as nanotechnology and…”
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Optical amplification performance of erbium doped zirconia-yttria-alumina-baria silica fiber [Invited] by Duarte, José, Paul, Mukul C., Das, Shyamal, Dhar, Anirban, Leitão, Joaquim P., Ferreira, Mário F., Rocha, Ana M.

“…The suitability for optical amplification in the C + L band of a new zirconia-yttria–alumina-baria silica glass fiber is evaluated. The gain and noise figure…”
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Optical and structural investigation of Cu2ZnSnS4 based solar cells by Teixeira, Jennifer P., Salomé, Pedro M. P., Sousa, Marta G., Fernandes, Paulo A., Sadewasser, Sascha, da Cunha, António F., Leitão, Joaquim P.

“…The structural and optical properties of two solar cells in which the Cu2ZnSnS4 absorber layer was sulphurized by two different methods (S flux and graphite…”
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Influence of CdS and ZnSnO Buffer Layers on the Photoluminescence of Cu(In,Ga)Se 2 Thin Films by Salome, Pedro M. P., Teixeira, Jennifer P., Keller, Jan, Torndahl, Tobias, Sadewasser, Sascha, Leitao, Joaquim P.

“…The search for alternatives to the CdS buffer layer in Cu(In,Ga)Se 2 (CIGS) solar cells has turned out to be quite promising in terms of power conversion…”
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CuInSe2 quantum dots grown by molecular beam epitaxy on amorphous SiO2 surfaces by Limborço Henrique, Salomé Pedro MP, Ribeiro-Andrade, Rodrigo, Teixeira, Jennifer P, Nicoara Nicoleta, Abderrafi Kamal, Leitão, Joaquim P, Gonzalez, Juan C, Sadewasser Sascha

“…The currently most efficient polycrystalline solar cells are based on the Cu(In,Ga)Se2 compound as a light absorption layer. However, in view of new concepts…”
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Label-Free Nanoscale ZnO Tetrapod-Based Transducers for Tetracycline Detection by Brás, Mariana, Zanoni, Julia, Falcão, Bruno P, Leitão, Joaquim P, Costa, Florinda M, Monteiro, Teresa, Pereira, Sónia O, Rodrigues, Joana

“…Antibiotic pollution of freshwaters and even food products has become an important concern worldwide. Hence, it is of utmost importance to develop…”
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Secondary crystalline phases identification in Cu $$_2$$ 2 ZnSnSe $$_4$$ 4 thin films: contributions from Raman scattering and photoluminescence by Salomé, Pedro M. P., Fernandes, Paulo A., Leitão, Joaquim P., Sousa, Marta G., Teixeira, Jennifer P., da Cunha, António F.

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Down conversion photoluminescence on PVP/Ag-nanoparticles electrospun composite fibers by Baptista, Ana C., Botas, Alexandre M., Almeida, Ana P.C., Nicolau, Ana T., Falcão, Bruno P., Soares, Manuel J., Leitão, Joaquim P., Martins, Rodrigo, Borges, João P., Ferreira, Isabel

“…[Display omitted] The influence of Ag nanoparticles (Ag NPs) on the luminescence of electrospun nonwoven mats made of polyvinylpyrrolidone (PVP) has been…”
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Substrate and Mg doping effects in GaAs nanowires by Kannappan, Perumal, Sedrine, Nabiha Ben, Teixeira, Jennifer P, Soares, Maria R, Falcão, Bruno P, Correia, Maria R, Cifuentes, Nestor, Viana, Emilson R, Moreira, Marcus V B, Ribeiro, Geraldo M, de Oliveira, Alfredo G, González, Juan C, Leitão, Joaquim P

“…Mg doping of GaAs nanowires has been established as a viable alternative to Be doping in order to achieve p-type electrical conductivity. Although reports on…”
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Enhanced radiation hardness of InAs/InP quantum wires by Sobolev, Nikolai A., Santos, Nuno M., Leitão, Joaquim P., Carmo, Maria C., Fuster, David, González, Luisa, González, Yolanda, Wesch, Werner

“…We report the influence of 2.4 MeV proton irradiation on the photoluminescence (PL) of self‐assembled InAs/InP quantum wires (QWRs) and quantum wells (QWs),…”
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Recombination Channels in Cu(In,Ga)Se 2 Thin Films: Impact of the Ga-Profile by Teixeira, Jennifer P., Vieira, Ricardo B. L., Falcão, Bruno P., Edoff, Marika, Salomé, Pedro M. P., Leitão, Joaquim P.

“…Depth bandgap profiles via a [Ga]/([Ga]+[In]) variation in the Cu(In,Ga)Se-2 (CIGS) absorber layer have been implemented as a strategy to enhance the…”
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Recombination of photo-generated charge carriers in H-terminated and (photo-)oxidized silicon nanoparticles by Falcão, Bruno P., Leitão, Joaquim P., Ricardo, Lídia, Águas, Hugo, Martins, Rodrigo, Pereira, Rui N.

“…•The main paths of recombination of photo-generated charges in Si nanoparticles (Si-NPs) are unveiled.•Upon weak photo-excitation, recombination takes place…”
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Silicon Nanoparticle Films Infilled with Al2O3 Using Atomic Layer Deposition for Photosensor, Light Emission, and Photovoltaic Applications by Botas, Alexandre M. P, Leitão, Joaquim P, Falcão, Bruno P, Wiesinger, Markus, Eckmann, Felix, Teixeira, Jennifer P, Wiggers, Hartmut, Stutzmann, Martin, Ferreira, Rute A. S, Pereira, Rui N

“…Solution-processed thin films of crystalline silicon nanoparticles (Si NPs) have a great potential for a wide variety of electronic and optoelectronic…”
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Optical and structural investigation of Cu2ZnSnS4 based solar cells (Phys. Status Solidi B 11/2016) by Teixeira, Jennifer P., Salomé, Pedro M. P., Sousa, Marta G., Fernandes, Paulo A., Sadewasser, Sascha, da Cunha, António F., Leitão, Joaquim P.

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Cu(In,Ga)Se$$_2$$-based solar cells for space applications: proton irradiation and annealing recovery by Candeias, Maria B., Fernandes, Tiago V., Falcão, Bruno P., Cunha, António F., Cunha, José M. V., Barbosa, João, Teixeira, Jennifer P., Fernandes, Paulo A., Peres, Marco, Lorenz, Katharina, Salomé, Pedro M. P., Leitão, Joaquim P.

“…In this work, we present an experimental study of a Cu(In,Ga)Se $$_2$$ 2 (CIGS)-based solar cell (SC), irradiated with protons of energy 80 and 180 keV and…”
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Photovoltaics: Passivation of Interfaces in Thin Film Solar Cells: Understanding the Effects of a Nanostructured Rear Point Contact Layer (Adv. Mater. Interfaces 2/2018) by Salomé, Pedro M. P., Vermang, Bart, Ribeiro‐Andrade, Rodrigo, Teixeira, Jennifer P., Cunha, José M. V., Mendes, Manuel J., Haque, Sirazul, Borme, Jêrome, Águas, Hugo, Fortunato, Elvira, Martins, Rodrigo, González, Juan C., Leitão, Joaquim P., Fernandes, Paulo A., Edoff, Marika, Sadewasser, Sascha

“…On the left a schematic of an ultrathin Cu(In,Ga)Se2 solar cell with passivated rear interface and on the right a transmission electron microscopy of the real…”
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CuInSe 2 quantum dots grown by molecular beam epitaxy on amorphous SiO 2 surfaces by Limborço, Henrique, Salomé, Pedro Mp, Ribeiro-Andrade, Rodrigo, Teixeira, Jennifer P, Nicoara, Nicoleta, Abderrafi, Kamal, Leitão, Joaquim P, Gonzalez, Juan C, Sadewasser, Sascha

“…The currently most efficient polycrystalline solar cells are based on the Cu(In,Ga)Se compound as a light absorption layer. However, in view of new concepts of…”
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