Reports, briefs and technical notes from Cools on semiconductor packaging technology and industry.
Technical noteMarine fuel savingThis document describes the design of a ship surface technology that coats the hull with a PDA anchoring layer and a positively charged PEI functional layer to suppress biofouling, and holds supplied micro- and nanobubbles on the wall to reduce friction drag.
Technical noteSolarThis Technical Note addresses the visible cell grids and electrodes that keep solar modules from looking like uniform architectural glass. It describes a module that cancels cell-side reflections with a circular-polarizing front layer and moves absorbed heat away from the cells.
Technical noteSolarThis Technical Note describes a structure that replaces the body of a solar cell's front collecting electrode, the part that sets silver usage, with copper. It sets out an electrode design and process that split the roles among PDA adhesion, copper wiring and a Ni-based diffusion barrier.
BriefSolarThis brief treats two problems usually handled separately in solution-processed perovskite films, residual DMSO removal and defect sealing, as one manufacturing variable: coordination state. It outlines a process that controls both with two wavelengths applied in sequence, together with a validation design. The full report is available in Korean. An English summary is provided on this page.
Technical notePower semiconductorsInP and Ga₂O₃ share two constraints: low thermal conductivity and costly single-crystal substrates. This Technical Note describes a common manufacturing platform that transfers only the functional layer onto a reaction-bonded silicon carbide (RBSC) support and joins it by interface-selective optical heating. The full report is available in Korean. An English summary is provided on this page.
Technical notePhotonicsIn heterogeneous silicon photonics integration, each added material exposes heat-sensitive optical devices to the bonding temperature again. This Technical Note sets out the principle, process and equipment of interface-selective bonding, which converts light into heat only at the designed bond interface. The full report is available in Korean. An English summary is provided on this page.
Technical noteSolarSemi-transparent solar cells divide a single absorber between daylighting and power generation. This Technical Note describes a manufacturing approach in which the thickness of a single-crystal III–V layer, set by the exfoliation depth, fixes both transmittance and output as product specifications. The full report is available in Korean. An English summary is provided on this page.
ReportSolarThis report explains a transparent perovskite solar cell that replaces ITO on both electrodes with continuous ultra-thin metal films, together with the wet, low-temperature process used to make the electrodes and the fields where the cell can be applied. The full report is available in Korean. An English summary is provided on this page.