| 학회 | 한국재료학회 |
| 학술대회 | 2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 | 23권 2호 |
| 발표분야 | G. 나노/박막 재료 분과 |
| 제목 | Novel Synthesis of Uniform Thin Film BaTiO3 Nanoparticle in the Fabrication of Efficient Perovskite Solar Cells |
| 초록 | ABSTRACT: BaTiO3 till date has been a very important inorganic compound to scientist due to its superb qualities which has helped improve the performance and manufacturing capabilities of existing technologies in various electronic and ceramic fields. It has excellent Ferro-electric, Piezo-electric, Dielectric, Pyroelectric and Photo -refractive properties. It has also gained wide usage in microphones, thermistors and sensors application. Our team became interested in BaTiO3 nanoparticle application in perovskite solar cells mainly because of its Photo-refractive effect and its similar band gap energy to TiO2. BaTiO3 is capable of producing dark and light beams in the visible and near infrared wavelengths after light absorption. In other to adequately utilize this property, it is pertinent to achieve a uniform thin film similar to that of TiO2 nanoparticle. This will ensure an increase in the generation of electron-hole pair in the solar cell. Achieving a uniform thin film has proven to be difficult due to the large particle sizes of BaTiO3 nanoparticles which is calcined at high temperatures and also the impact of the starting materials in the particle sizes. We were able to come up with different synthesis methods to achieve a highly reduced particle sized BaTiO3 nanoparticles at low temperatures. These uniform thin films can now be applied in the fabrication of perovskite solar cells to achieve PCEs more than 10%. We successfully reduced the particle size of mesoporous BaTiO3 particles to 28.5nm (using BaNO3 as the starting material) which is in the range of mesoporous TiO2 nanoparticle that is applied in the fabrication of efficient perovskite solar cells. We were able to achieve uniform thin film by substituting the starting materials of BaTiO3 synthesis. Temperature greatly influences the particle size of mesoporous BaTiO3 nanoparticles. The higher the temperature, the higher the particle size and vice versa. |
| 저자 | 최대규 |
| 소속 | 전북대 |
| 키워드 | <P>BaTiO<SUB>3;</SUB> Nanoparticle; Perovskite; Solar Cells</P> |
