Lee, Ji-Yeong Ahmed, Sk Faruque Park, Min-Ho Ha, Seung-kyu Park, Jong-Ku Yun, Jae Ho Ahn, Se Jin Lee, Kwang-Ryeol Choi, Won Jun Moon, Myoung-Woon Yang, Cheol-Woong 2024-01-20T14:01:08Z 2024-01-20T14:01:08Z 2021-09-05 2012-10 0927-0248 https://pubs.kist.re.kr/handle/201004/128818 We developed a simple and effective method for the large scale formation of self-assembled Cu(In,Ga)Se-2 (CIGS) nanocrystals by ion beam irradiation. The compositional changes and morphological evolution were observed as a function of the irradiation time. As the ion irradiation time increased, the nano-dots were transformed into a nano-ridge structure due to the competition between sputtering and diffusion processes during irradiation. In terms of the stoichiometry of the CIGS nano-dots, an increase in the Cu content was observed while the Se content decreased. The PL peak of the nano-dots formed CIGS thin film exhibited a blue-shift. Uniformly formed crystalline CIGS nano-dots can be adopted to increase the p-n junction area and the size confinement effect between the CdS and CIGS film in solar cell systems. This simple method can be exploited for band-gap engineering and enhancing photovoltaic properties. (c) 2012 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV CUINSE2 QUANTUM DOTS THIN-FILM PHOTOLUMINESCENCE PROPERTIES PHASE-TRANSFORMATION SOLAR-CELLS LARGE-SCALE DIFFUSION MORPHOLOGY IN2SE3 Self-assembled Cu(In,Ga)Se-2 nanocrystals formed by Ar ion beam irradiation Article 10.1016/j.solmat.2012.05.034 1 SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.105, pp.119 - 124 SOLAR ENERGY MATERIALS AND SOLAR CELLS 105 119 124 scie scopus 000308386000017 2-s2.0-84862616847 Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Energy & Fuels Materials Science Physics Article CUINSE2 QUANTUM DOTS THIN-FILM PHOTOLUMINESCENCE PROPERTIES PHASE-TRANSFORMATION SOLAR-CELLS LARGE-SCALE DIFFUSION MORPHOLOGY IN2SE3 Ion beam irradiation CIGS Nano-dot Nanocrystals Photovoltaic system