Park, Sungeun Park, Hyomin Kim, Dongseop Yang, JungYup Lee, Dongho Kim, Young-Su Kim, Hyun-Jong Suh, Dongchul Min, Byoung Koun Kim, Kyung Nam Park, Se Jin Kim, Donghwan Lee, Hae-Seok Nam, Junggyu Kang, Yoonmook 2024-01-19T22:34:50Z 2024-01-19T22:34:50Z 2022-01-25 2018-05 1598-9623 https://pubs.kist.re.kr/handle/201004/121395 Passivated emitter and rear contact (PERC) is a promising technology owing to high efficiency can be achieved with p-type wafer and their easily applicable to existing lines. In case of using p-type mono wafer, 0.5-1% efficiency increase is expected with PERC technologies compared to existing Al BSF solar cells, while for multi-wafer solar cells it is 0.5-0.8%. We addressed the optimization of PERC solar cells using the Al paste. The paste was prepared from the aluminum-silicon alloy with eutectic composition to avoid the formation of voids that degrade the open-circuit voltage. The glass frit of the paste was changed to improve adhesion. Scanning electron microscopy revealed voids and local back surface field between the aluminum electrode and silicon base. We confirmed the conditions on the SiNx passivation layer for achieving higher efficiency and better adhesion for long-term stability. The cell characteristics were compared across cells containing different pastes. PERC solar cells with the Al/Si eutectic paste exhibited the efficiency of 19.6%. English KOREAN INST METALS MATERIALS Optimization of Controllable Factors in the Aluminum Silicon Eutectic Paste and Rear Silicon Nitride Mono-Passivation Layer of PERC Solar Cells Article 10.1007/s12540-018-0032-8 1 METALS AND MATERIALS INTERNATIONAL, v.24, no.3, pp.664 - 671 METALS AND MATERIALS INTERNATIONAL 24 3 664 671 N scie scopus kci 000431506500025 2-s2.0-85045136033 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article PERC solar cells Aluminum silicon eutectic paste Al paste Rear passivation