| 학회 | 한국재료학회 |
| 학술대회 | 2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 | 27권 2호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | The comparison of Atomic Layer Deposited nickel Oxides using Ni(dmamb)2 precursor and H2O, O3 oxidants. |
| 초록 | Charge transporting materials (CTMs) in perovskite solar cells (PSCs) have played an important role in improving the stability by replacing the liquid electrolyte with solid state electron or hole conductors and enhancing the photovoltaic efficiency by the efficient electron collection. Many organic and inorganic materials for charge transporting in PSCs have been studied and applied to increase the charge extraction, transport and collection, such as Spiro-OMeTAD for hole transporting material (HTM), TiO2 for electron transporting material (ETM) and MoOX for HTM etc. However, recently inorganic CTMs are used to replace the disadvantages of organic materials in PSCs such as, the long-term operational instability, low charge mobility. Especially, atomic layer deposition (ALD) has many advantages in obtaining the conformal, dense and virtually pinhole-free layers. Here, we review ALD inorganic CTMs and their function in PSCs in view of the stability and contribution to enhancing the efficiency of photovoltaics. The inorganic CTMs used in a PSC, have effective properties, such as, high hole mobility and low cost, e.g., CuI, CuSCN and NiO, but the solvent used for their deposition causes the perovskite to dissolve and degrade the device’s stability [17]. ALD can be an alternative to solve the problem that is caused by the solution process, it is a piece of equipment used for depositing very thin and uniform films. ALD has good controllability, better step coverage, excellent stoichiometry, relatively low growth temperature, low impurity concentration and precise thickness control. In this study, NiO for HTM were grown by ALD using Ni(dmamb)2 precursor and H2O, O3 oxidants. And then their electrical and chemical characteristics were analyzed and compared by x-ray photoelectron spectroscopy, Ultraviolet photoelectron spectroscopy, UV-Vis, Reflection Electron Energy Loss Spectroscopy, etc. |
| 저자 | 조영준, 장효식 |
| 소속 | 충남대 |
| 키워드 | <P>ALD; NiOx; perovskite; photovoltaics; HTL</P> |
