常壓介電質放電噴射電漿改質二氧化鈦於可撓性nip鈣鈦礦太陽能電池之應用

Abstract

The development of solar cells has emerged to be the best solution for the ongoing shortage of energy worldwide today. Among various solar cells, perovskite solar cells have achieved significant progress in the short duration when compared to other solar cells. Perovskite not only exploits the potential of large-area cells but also opens up the field of flexible substrates. Thus, in this research study, we focused on the development of glass perovskite solar cells and flexible perovskite solar cells by various techniques which improved the power conversion efficiency of the device. We even used the effective process like solution process to deposit the electron- transport layer (ETL), light-absorbing layer, and hole-transport layer (HTL) which effectively produces the high-quality film, and we used a low-temperature process technique for the TiO2 (ETL) deposition to reduce the energy consumption during the production. We post treated the TiO2 layer (ETL) with a low temperature (<40°C) dielectric barrier discharge (DBD) jet using the Helium gas, and mixture gas with He – 95%, and O2 -5% as the carrier gases. We treated both the glass and flexible perovskite solar cells with the DBD-jet. We varied the scan parameters such as scan speed from 1 cm/s – 3 cm/s, and by scanning from 5 – 15 times, maintained at a scan height of 1.5 cm, and determined the device performance for the perovskite solar cells. Whereas, we varied the scan height from 4 cm – 6 cm, and scan speed from 1 cm/s – 3 cm/s, and by scanning 5 – 15 times and determined the device performance for the flexible perovskite solar cells. We considered the optimum scan parameters and found that the device performance has been improved when compared to that of the device without the DBD-jet treatment for both the glass and flexible perovskite solar cells using the two carrier gases. By using He-DBDjet to treat the ETL, the glass perovskite solar cells exhibited improvement in its power conversion efficiency (PCE) from 13.91% to 14.43%, whereas the flexible perovskite solar cells exhibited improvement in its power conversion efficiency from 12.3% to 13.6%. When the mixture gas (He + O2) DBD-jet is used to treat the ETL, then the glass perovskite solar cells improved its power conversion efficiency (PCE) from 13.91% to 14.3%, whereas the flexible perovskite solar cells improved its power conversion efficiency from 12.3% to 13.37%. Several material analyses such as EIS, XPS, XRD, water contact angle determination, SEM, and AFM are conducted to confirm the results.