A new anodic buffer layer material for non-mixed planar heterojunction chloroboron subphthalocyanine organic photovoltaic achieving 96% internal quantum efficiency

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/101361

Title:	A new anodic buffer layer material for non-mixed planar heterojunction chloroboron subphthalocyanine organic photovoltaic achieving 96% internal quantum efficiency
Authors:	陳錦地;Lin, Chi-Feng;Liu, Shun-Wei;Lee, Chih-Chien;Sakurai, Takeaki;Kubota, Masato;Su, Wei-Cheng;Huang, Jia-Cing;Chiu, Tien-Lung;Han, Hsieh-Cheng;Chen, Li-Chyong;Chen, Chin-Ti;Lee, Jiun-Haw
Contributors:	理學院化學學系
Keywords:	ANODES;Anodic buffer layer;Buffer layers;CHLORIDES;COPPER PHTHALOCYANINE;Heterojunctions;Indium tin oxide;INTERFACES;Internal quantum efficiency;ORGANIC COMPOUNDS;Organic photovoltaic;Photovoltaic cells;Planer heterojunction;Quantum efficiency;Solar cells;Volatile organic compounds
Date:	2015-01-01
Issue Date:	2026-04-21 14:31:33 (UTC+8)
Publisher:	Elsevier BV;Elsevier B.V
Abstract:	摘要： Nonmixed planar heterojunction (PHJ) small-molecule organic photovoltaics (OPVs) with 96% internal quantum efficiency (at 595nm) and 4.77% power conversion efficiency (PCE) have been demonstrated. In addition to boron subphthalocyanine chloride (SubPc) and C60 as electron donor and acceptor materials, respectively, PHJ OPVs contain an ultrathin (2nm) buffer layer of bis-(naphthylphenylaminophenyl)fumaronitrile (NPAFN) between the indium tin oxide (ITO) anode and the donor layer (SubPc). Compared with copper phthalocyanine (CuPc) or α-naphthylphenylbiphenyl diamine (NPB) buffer layers, the NPAFN buffer layer blocks the exciton diffusion from the SubPc electron donor layer to the ITO anode more effectively and considerably improves the short circuit current (JSC) from 5.96 (without an NPAFN layer) to 7.70mA/cm2 (with a 4-mm-thick NPAFN layer ). In addition, experimental results indicated that the NPAFN buffer layer reduces the crystallization, or stacking, of the SubPc electron donor, thereby limiting the reverse saturation current and elevating the open circuit voltage (VOC) from 1.01 (without an NPAFN layer) to 1.08V (with a-2-nm thick NPAFN layer). However, series resistance (RS) of the OPV monotonically increases with increasing NPAFN layer thickness. The performance of the OPV is optimized when the NPAFN buffer layer thickness is 2nm. Compared with a SubPc–C60 PHJ OPV without an NPAFN buffer layer, the PCE of a OPV with a buffer layer increases by 22% from 3.96% to 4.77%, with a concurrent increase in JSC (from 5.96 to 7.02mA/cm2) and VOC (from 1.01 to 1.08V). However, a decrease in RS (from 10.21 to 14.95Ωcm2) and in fill factor (from 65% to 63%) is also observed. •Planar heterojunction small-molecular OPV device with the device efficiency of 4.77%.•A new type anodic buffer layer as exciton buffer layer of the OPV devices.•Internal quantum efficiency of the device reached 96% at 590nm. 出版者： Elsevier B.V 出版日期： 2015-06-01 出處： Solar Energy Materials and Solar Cells, 2015-06, Vol.137, p.138-145 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier B.V. 識別號： ISSN: 0927-0248 識別號： EISSN: 1879-3398 識別號： DOI: 10.1016/j.solmat.2015.01.011
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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