| 학회 | 한국재료학회 |
| 학술대회 | 2016년 봄 (05/18 ~ 05/20, 여수 디오션리조트 ) |
| 권호 | 22권 1호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | All-transparent photoelectric devices usingmetal oxides |
| 초록 | Photoelectric devices, which include solar cells, LEDs, and photsensors, convert electric power to light, or vice versa. We have produced a new class of all-metal oxide transparent photoelectric devices (T-PEDs) from the NiO/ZnO junction. We developed nickel oxide for the p-type transparent layer, and zinc oxide for the n-type layer.We formed this heterojunction p-NiO/n-ZnO using widely available largescale sputtering.1 Our device has no opaque metal electrode, enabling full transparency (visible light permission＞80%). Furthermore, our methodology does not contain any toxic chemical processing, and uses only Earth-abundant materials.2 Our optimized device, which has a 50nm-thick nickel layer, can efficiently absorb UV light and provides the highest responsivity and excellent detectivity. Our investigations revealed fast UV photodetection (24.2ms), which is attributed to defects and a very high absorption coefficient. Elsewhere, other wide bandgap indium tin oxide materials have been used as a nanoscale lens to focus the incident light onto a designated spot inside silicon. These results demonstrate the potential for improved silicon solar cell efficiency of 16% or higher2–4 for alternative approaches to conventional high efficiency silicon solar cells. (References) 1. M. Patel, H.-S. Kim, and J. Kim, All transparent metal oxide ultraviolet photodetector, Adv. Electron. Mater. 1, p. 1500232, 2015. 2. J. Kim, M. D. Kumar, J.-H. Yun, H.-H. Park, E. Lee, D.-W. Kim, H. Kim, et al., Transparent conductor-embedding nanolens for Si solar cells, Appl. Phys. Lett. 106, p. 151904, 2015. 3. J. Kim, J.-H. Yun,H. Kim, Y. Cho,H.-H. Park,M. D. Kumar, J. Yi, et al., Transparent conductor-embedding nanocones for selective emitters: optical and electrical improvements of Si solar cells, Sci. Rep. 5, 2015. doi:10.1038/srep09256 4. J. H. Yun, E. Lee, H.-H Park, D.-W. Kim, W. A. Anderson, J. Kim, and N. et al., Incident light adjustable solar cell by periodic nanolens architecture, Sci. Rep. 4, p. 6879, 2014. |
| 저자 | 김준동, Malkeshkumar Patel, 김홍식 |
| 소속 | 인천대 |
| 키워드 | Transparent Photoelectric Devices; Metal oxides; Solar cells; Photodetector. |
