Okumu john (5 Ergebnisse)

Hard Cover. Zustand: Fair. No Jacket. Ex-library with the usual features. Occasional marks in the text, otherwise the pages are clean and tight. Front hinge is beginning to split but holding. Cover is edge worn. 297 pages. Ex-Library.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Research Paper (undergraduate) from the year 2012 in the subject Energy Sciences, grade: B, , course: Material Engineering Technology, language: English, abstract: In this work, n-type CdxZn1-xS and p-type PbS layers were optimized through chemical solution technique for solar cells. CdxZn1-xS was grown at 820 C while PbS was grown at room temperature utilizing aqueous conditions. Optical constants suitable for solar cells fabrication were investigated. CdxZn1-xS films had a band gap varying from 2.47eV (x = 0.6) to 2.72 eV (x = 1.0), transmittance above 79% in VIS - NIR region with resistivity range of 9.5×101 to 1.22× 102 -cm. PbS had a band gap of 0.89 eV, transmittance below 55% with a resistivity range of 6.78 × 103 to 1.26 × 104 -cm appropriate for solar cell absorber layers. Their solar cell had a short circuit current, Isc = 0.031A, open voltage, Voc = 0.37 V, efficiency, = 0.9% with a fill factor, ff = 0.66.…

Zustand: Good. illustrated edition. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.…

Hardcvoer. Rubbed dust jacket, o/wise good condition. Examines the environments of administration; internal aspects of administration; planning and implementation; exercising central control etc. 366pp.

Paperback. Zustand: Brand New. 92 pages. 8.66x5.91x0.21 inches. In Stock.