Characteristics of Dye-Sensitized Solar Cells with TiO<sub>2</sub> Stripes
oleh: Wen-Feng Lai, Pei-Ling Chao, Xin-Yu Lin, Yin-Pei Chen, Jih-Hsin Liu, Tz-Feng Lin, Wei-Chou Hsu, Chia-Yi Huang
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2022-06-01 |
Deskripsi
A TiO<sub>2</sub> strip array with a thickness of 90 nm was fabricated by photolithography and physical vapor deposition. This work utilized the chemical and physical methods to fabricate the TiO<sub>2</sub> strip array. A porous semiconductor layer made of TiO<sub>2</sub> nanoparticles was coated on the TiO<sub>2</sub> strip array. The TiO<sub>2</sub> strip array has a one-dimensional protrusive structure. The energy conversion efficiency (4.38%) of a dye-sensitized solar cell (DSSC) with the TiO<sub>2</sub> strip array exceeded that (3.20%) of a DSSC without a TiO<sub>2</sub> strip array by 37%. In addition, this result was verified by the electrochemical impedance spectra of the two DSSCs. Therefore, the TiO<sub>2</sub> strip array can be used to increase the energy conversion efficiencies of DSSCs. The large energy conversion efficiency of the DSSC with the TiO<sub>2</sub> strip array arises from the large surface area of the one-dimensional protrusive structure and its specific electron transport paths. The DSSC with the TiO<sub>2</sub> strip array has advantages of economical production cost, easy fabrication, and boosting energy conversion efficiency.