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Laser Induced Forward Transfer for front contact improvement in silicon heterojunction solar cells
Colina Brito, Mónica Alejandra; Morales Vilches, Ana Belén; Voz Sánchez, Cristóbal; Martín García, Isidro; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Alcubilla González, Ramón
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
In this work the Laser Induced Forward Transfer (LIFT) technique is investigated to create n-doped regions on p-type c-Si substrates. The precursor source of LIFT consisted in a phosphorous-doped hydrogenated amorphous silicon layer grown by Plasma Enhanced Chemical Vapor Deposition (PECVD) onto a transparent substrate. Transfer of the doping atoms occurs when a sequence of laser pulses impinging onto the doped layer propels the material toward the substrate. The laser irradiation not only transfers the doping material but also produces a local heating that promotes its diffusion into the substrate. The laser employed was a 1064 nm, lamp-pumped system, working at pulse durations of 100 and 400 ns. In order to obtain a good electrical performance a comprehensive optimization of the applied laser fluency and number of pulses was carried out. Subsequently, arrays of n + p local junctions were created by LIFT and the resulting J – V curves demonstrated the formation of good quality n+ regions. These structures were finally incorporated to enhance the front contact in conventional silicon heterojunction solar cells leading to an improvement of conversion efficiency
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials funcionals::Materials elèctrics i electrònics
Àrees temàtiques de la UPC::Energies::Energia solar fotovoltaica::Cèl·lules solars
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
Solar cells
Materials -- Electric properties
Lasers -- Industrial applications
LIFT
Silicon heterojunction
solarcell
Laser direct-write
Cèl·lules solars
Materials -- Propietats elèctriques
Làsers -- Aplicacions industrials
info:eu-repo/semantics/submittedVersion
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López Rodríguez, Gema; Ortega Villasclaras, Pablo Rafael; Voz Sánchez, Cristóbal; Martín García, Isidro; Colina Brito, Mónica Alejandra; Morales Vilches, Ana Belén; Orpella García, Alberto; Alcubilla González, Ramón
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Colina Brito, Mónica Alejandra; Martín García, Isidro; Voz Sánchez, Cristóbal; Morales Vilches, Ana Belén; Ortega Villasclaras, Pablo Rafael; López Rodríguez, Gema; Orpella García, Alberto; Alcubilla González, Ramón; Sanchez Aniorte, Maria Isabel; Molpeceres Alvarez, Carlos
 

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