| 학회 |
한국공업화학회 |
| 학술대회 |
2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 |
20권 1호 |
| 발표분야 |
에너지저장변환_포스터 |
| 제목 |
Increase in open-circuit voltage of dye-sensitized solar cells with Na2S-modified photoelectrode |
| 초록 |
The effects of sodium sulfide(Na2S) as a surface modifier on the performance of dye-sensitized solar cells (DSSCs) were studied. Na2S-modified TiO2 electrodes prepared by a soaking process were applied to the photoelectrodes of DSSCs. The reference device without any modification showed performance of 672mV of open-circuit voltage(Voc), 17.35mA/cm2 of short-circuit current(Jsc), and 66.15% of fill factor (FF), which led to a power conversion efficiency (PCE) of 7.71%, whereas for the device with the Na2S-TiO2/FTO electrode, the PCE was increased to 8.08%(Voc = 700mV, Jsc = 16.53 mA/cm2, and FF = 69.81%). It is believed that the Na2S modification induced the formation of a surface dipole on the TiO2 photoelectrode, leading to the conduction band edge shift of TiO2 toward a negative direction, and thus to an enhancement in Voc and a decrease in Jsc. |
| 저자 |
성혜경1, 남혜정1, 신동원1, 조성일1, 김종태2, 김동환2, 한윤수1
|
| 소속 |
1대구가톨릭대, 2대구경북과학기술원 |
| 키워드 |
Dye-sensitized solar cells; sodium sulfide; conduction band edge shift
|
| E-Mail |
|
