Proceedings of International Conference Asia-Pacific Hybrid and Organic Photovoltaics 2018 (AP-HOPV18)
Publication date: 27th October 2017
Organic thin film solar cell has been noticed to flexible and lightweight of itself. Organic material laminated thin films contains the metal contamination of ppm order, which is incorporated during manufacturing. It has possibility that metal contamination influences characteristic and life time of the organic thin film solar cell device. We studied how the metal contamination in the organic material using the active layer affects characteristic of the organic thin film solar cell.
The fabricated organic thin film solar cell laminated 3,4-ethylenedioxy thiophene-polystyrene sulfonic acid (PEDOT:PSS) as hole transport layer, active layer, which has heterodyne structure of Poly(3-hexylthiophene-2,5-diyl (P3HT) as a donor and [6,6]-Phenyl C61 butyric acid methyl ester ( PCBM ) as an acceptor, and aluminum electrode in turn on the glass substrate deposited with indium tin oxide (ITO). Solution of the active layer dissolved into P3HT(10mg) and PCBM(7mg) in ortho-dichlorobenzene (o-DCB) (1mL). And the organic thin film solar cell devices were manufactured in the two cases, one in which metal contamination in the solution was removed and in another case of not removing them. Also, fabricated devices were evaluated dielectric characteristics, J-V characteristics Atomic Force Microscope (AFM) measurement, film thickness measurement and visible ultraviolet absorption spectrum measurement.
J-V characteristics were obtained by results measuring twice times in 16 points each measuring two devices. From J-V characteristics, the average values of short-current density (Jsc), open-circuit voltage (Voc), fill factor (FF) and power conversion efficiency (PCE) without purification were 2.29±0.40 mA/cm2, 0.48±0.01 V, 0.43±0.03 and 0.48±0.07 %, respectively. The other hand, the average values of Jsc, Voc, FF and PCE with purification were 3.21±0.24 mA/cm2, 0.54±0.01 V, 0.53±0.03, 0.93±0.07 %, respectively. As results, characteristics of the device removed metal contamination was improved. It has not been clear yet, it was found that metal contamination in the active layer in the organic solution influenced the characteristics of the organic thin film solar cell, and removing of metal contamination could improve the characteristics of them. By the conference, we will measure the concentration of the metal contamination by the inductively coupled plasma - mass spectrometry (ICP-MS), then will be clear the relationship between metal contamination and characteristics of the organic thin film solar cell.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
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