Cell formation : a real life application

Uyanık, Başar
In this study, the plant layout problem of a worldwide Printed Circuit Board (PCB) producer company is analyzed. Machines are grouped into cells using grouping methodologies of Tabular Algorithm, K-means clustering algorithm, and Hierarchical grouping with Levenshtein distances. Production plant layouts, which are formed by using different techniques, are evaluated using technical and economical indicators.


Dye Sensitized Solar Modules with Embedded Silver Lines
Icli, Kerem Cagatay; Ozenbas, Macit (2016-01-01)
We employed ultrasonic spray deposition method for production of high quality FTO thin film TCOs to be employed in a silver embedded grid type and monolithic type dye sensitized solar modules. Produced films exhibited dense and crystalline structure with homogeneous coverage on solar glass substrates. Obtained resistivity and light transmission values of FTO are comparable to commercially available FTO coated glasses used widely in the industry. After optimization of the chemistry and deposition conditions,...
Photon-to-carrier efficiencies of nanostructured zinc-phthalocyanine/fullerene thin films assessed by time-resolved terahertz spectroscopy
Esentürk, Okan; Lane, Paul A.; Heilweil, Edwin J. (null; 2008-01-01)
Blend and multilayer Zinc-phthalocyanine/fullerene thin films were investigated as model active layers for solar cells by Time-Resolved Terahertz Spectroscopy. A strong dependence on the blend ratio and multilayer nano-structure of the films was found
Uiltrafast Photoinduced Carrier Dynamics of Organic Semiconductors Measured by Time-resolved Terahertz Spectroscopy
Esentürk, Okan; Lane, Paul A.; Heilweil, Edwin J. (2010-01-01)
Intrinsic properties of organic semiconductors are investigated by Time-Resolved Terahertz Spectroscopy (TRTS) to assess their relative mobilities and efficiencies. Our results are well correlated with device measurements and show the effectiveness and advantages of using this non-contact optical technique to rapidly identify prospective materials. After a brief introduction of the TRTS technique, we summarize our results from relative mobility measurements of the organic semiconductor polymers poly(3-hexyl...
Photovoltaic performance of CdS/CdTe junctions on ZnO nanorod arrays
Kartopu, G.; Turkay, D.; Özcan, Can; Hadıbrata, W.; Aurang, P.; Yerci, Selçuk; Ünalan, Hüsnü Emrah; Barrioz, V.; Qu, Y.; Bowen, L.; Gurlek, A. K.; Maiello, P.; Turan, Raşit; Irvine, S. J. C. (2018-03-01)
One-dimensional nanostructures, such as nanorod (NR) arrays, are expected to improve the photovoltaic (PV) response of solar cells with an ultrathin absorber due to an increased areal (junction) density and light trapping. We report on the deposition of CdS and CdTe:As semiconductor thin films on ZnO NR arrays by means of metalorganic chemical vapour deposition (MOCVD). The change in optical properties of the ZnO NRs upon the growth of CdS shell was monitored and compared to the simulated data, which confir...
Production of hydrogenated nanocrystalline silicon based thin film transistor
Aliyeva, Tamila; Atılgan, İsmail; Department of Physics (2010)
The instability under bias voltage stress and low mobility of hydrogenated amorphous silicon (a-Si:H) thin film transistor (TFT), produced by plasma enhanced chemical vapor deposition (PECVD) technique, are the main problems impeding the implementation of active matrix arrays for light emitting diode display panels and their peripheral circuitry. Replacing a-Si:H by hydrogenated nanocrystalline silicon film (nc-Si:H) seems a solution due to its higher mobility and better stability. Therefore nc-Si:H TFT was...
Citation Formats
B. Uyanık, “Cell formation : a real life application,” M.S. - Master of Science, Middle East Technical University, 2005.