Abstrak
Penelitian ini bertujuan untuk menghasilkan photoanoda single layer dan double layer dengan ZnO didoping aluminium (AZO) untuk memperbaiki unjuk kerja dye-sensitized solar cells (DSSC). Photoanoda tersusun dari fluorine-doped tin oxide (FTO), semikonduktor dan pewarna. Photoanoda single layer dibuat dengan mendeposisikan secara langsung AZO nanofiber pada FTO melalui metode elektrospinning. Photoanoda double layer dibuat dengan menyemprotkan larutan TiCl4 ke permukaan FTO pada temperatur 70°C kemudian dilapisi dengan AZO nanofiber melalui metode doctor blade. Kedua photoanoda direndam dalam pewarna N719 selama 24 jam dan selanjutnya dirakit menjadi DSSCs. Hasil penelitian menunjukkan bahwa nilai V_OC, J_SC, FF, dan efisiensi dari DSSCs dengan photoanoda single layer masing-masing adalah 584,69 mV, 1,811 mA/cm2, 38,76%, dan 0,4110%. Sedangkan untuk DSSC dengan photoanoda double layer memiliki nilai V_OC, J_SC, FF, dan efisiensi sebesar 706.86 mV, 2.607 mA/cm2, 51.03%, dan 0.9403%. Fabrikasi photoanoda double layer mampu meningkatkan efisiensi DSSCs hingga 2,3 kali dibandingkan DSSC dengan photoanoda single layer.
Kata kunci:ZnO didoping aluminium (AZO), unjuk kerja DSSC, nanofiber, photoanodasingle layer dandouble layer
Abstract
The research aims to produce singlelayer and doublelayer photoanode with Al-doped ZnO (AZO) for improving the performance of dye-sensitized solar cells (DSSCs). The photoanode consists of fluorine-doped tin oxides (FTOs), semiconductors, and dyes. The singlelayer photoanode was carried out by the direct deposition of AZO nanofibers on the FTOs using an electrospinning method. The double layer photoanode was made by the spray of TiCl4 solution on the layer of FTOs at a temperature of 70°C followed by coating of AZO nanofibers using a doctor blade method. Both of  photoanodes were immersed in N719 dyes for 24 hours then fabricated into DSSCs. The characteristic of DSSCs was evaluated under the irradiation of 100 mW/cm2. The results show that V_OC, J_SC, FF, and efficiency of DSSCs based on singlelayer photoanode were 584.69 mV, 1.811 mA/cm2, 38.76%, and 0.4110%, respectively. Meanwhile, the respective V_OC, J_SC, FF, and efficiency of DSSCs based on double layer photoanode were 706.86 mV, 2.607 mA/cm2, 51.03%, and 0.9403%. Therefore, the fabrication of double layer photoanode can increase the efficiency of DSSCs up to 2.3 time compared by DSSCs with singlelayer photoanode.
Keywords:Al-doped ZnO (AZO), performance of dye-sensitized solar cells, nanofibers, singlelayer and double layer photoanode