[vc_empty_space][vc_empty_space]
Tuning Optoelectronic Properties Through In-Plane Arrangement and Point Defects in ZnO Nanorods as Prepared by Room-Temperature DC-Unbalanced Magnetron Sputtering
Purbayanto M.A.K.a, Nurfani E.b, Widita R.a, Takase K., Darma Y.a
a Department of Physics, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Materials Engineering Program, Institut Teknologi Sumatera, Lampung, 35365, Indonesia
c College of Science and Technology, Nihon University, Tokyo, 101-0062, Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Electronic and optical properties of ZnO nanorods grown by room temperature dc-unbalanced magnetron sputtering are studied. As a comparison, ZnO thin film is deposited as well. Surface morphology images and X-ray diffraction patterns show that ZnO nanorods are successfully grown with hexagonal wurtzite structure and the diameter varies from 50 to 90 nm. Using photoluminescence spectroscopy, the presence of oxygen vacancy (V O ) is observed in ZnO nanorods sample. Furthermore, current–voltage measurement shows that ZnO nanorods have a lower dark current due to V O -induced oxygen adsorption, which confirms the presence of a high potential barrier related to the V O . It is found that ZnO nanorods give photocurrent to dark current ratio almost 20 times higher than that of the thin film at bias voltage of 5 V. Here, the performance of ZnO nanorods with the metal-semiconductor-metal (MSM) and p-n heterojunction configuration is also compared. The photosensitivity of MSM configuration is six times higher than p-n heterojunction. These results are important to improve the functionality of nanostructured ZnO by controlling the structure and point defects for nano-scale optoelectronic application.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Electronic and optical properties,Hexagonal wurtzite structure,Metal semiconductor metal,Optoelectronic applications,Optoelectronic properties,P-n heterojunctions,Unbalanced magnetron sputtering,ZnO nanorod[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]dc-unbalanced magnetron sputtering,electrical properties,optical properties,ZnO nanorods[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was partly supported by Ministry of Research Technology and Higher Education (Kemenristekditkti) Republic of Indonesia through Penelitian Dasar Unggulan Perguruan Tinggi (PDUPT) 2019 Riset KK ITB 2019 and P3MI 2019 ITB research program.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1002/pssa.201800901[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]