Towards ink-jet printed fine line front side metallization of crystalline silicon solar cells

Facile synthesis of high silver content MOD ink by using silver oxalate precursor for inkjet printing applications

“…All the films show a homogeneous microstructure consisting of interconnected domains of silver nanoparticles and a few voids. This cellular type microstructural feature is typical of the films formed using MOD inks, and is a result of the fast evaporation of solvent and thermal decomposition of silver complexes [29]. It is known that the solvent evaporation and decomposition of silver complex can lead to the occurrence of bubbling in the thermal posttreatment and leave conductive silver thin films with pores.…”

Numerical investigation of multi-droplets deposited lines morphology with a multiple-relaxation-time lattice Boltzmann model

“…Additive manufacturing process such as inkjet printing (Derby, 2010), micro-fabrication (Fathi and Dickens, 2013;Vaezi et al, 2013), rapid prototyping (O'Neill et al, 2014;Zhang et al, 2003) and aerosol jetting (Mette et al, 2007), characterized with direct patterning, has drawn greater attention in the manufacture of electronic products such as RFID tags (Subramanian et al, 2005), polymer transistor circuits (Sirringhaus et al, 2000) and solar cell fine line metallization (Gizachew et al, 2011). In the process of printed lines formation, multiple droplets made up of functional materials need to be deposited precisely on the substrate and forms a conductive line.…”

“…A few studies have been performed to investigate the formation and morphology of multidroplets deposited line process with non-ideal substrates. How to obtain uniform morphology and high resolution of printed line plays a significant role in industrial process including high density polymer electronics (Meier et al, 2009) and fine line metallization of solar cells (Gizachew et al, 2011;Stuwe et al, 2015). The geometric model of uniform line formation proposed by Stringer and Derby (2010) is suitable for the capillary forces driven scenarios with moderate Reynolds numbers.…”

Desarrollo de procesos para formación de contactos con láser para módulos thin film CIGS para aplicaciones fotovoltaicas

“…The latter mode has been developed for metallizing solar cells using both metalorganic and nanoparticle inks [36][37][38]. The DOD system uses a piezoelectric transducer, which can generate on-demand droplet that are ejected through a nozzle toward the substrate surface.…”

“…Several different printing techniques has been developed to overcome the limitation of the conventional screen-printing [5,18,37,74,78], which is the wel-established and robust method to deposit metal contacts in solar cell industrial production. Compare to the screen-printing technique, LIFT makes it competitive to print a tens of micrometer width of the contact fingers with enhanced aspect radio (height/width), resulting in reducing the shading losses on the cell surface and series resistance but higher sheet resistance and conductivity, which finally leads to an increasing efficiency of solar cell.…”