کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1551210 998119 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of charge carrier recombination rates in planar hybrid CdS/poly3-octylthiophene solar cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Measurement of charge carrier recombination rates in planar hybrid CdS/poly3-octylthiophene solar cells
چکیده انگلیسی

Hybrid bilayer solar cells have been prepared by chemical bath deposition of cadmium sulfide (CdS) thin films on conductive glass and drop cast poly3-octylthiophene (P3OT) solution on top of CdS free surface. Gold contact on P3OT film was thermally evaporated. Transient photoconductance decay method was implemented to determine the charge carrier recombination times in CdS films. The same parameter in P3OT films was estimated by time-of-flight technique. Charge recombination processes in CdS/P3OT interface were studied by transient photovoltage method. The relation between the photovoltaic performance of hybrid cells and charge recombination times at CdS/P3OT interface was analyzed as a function of P3OT film thickness. It is suggested that the ambient oxygen or humidity may originate the increased charge recombination center density in thinner P3OT films and, as a result, deteriorate the short-circuit current density and open-circuit voltage values of the corresponding hybrid cells.


► Transient photoconductance, time-of-flight, transient photovoltage were discussed.
► Charge recombination rates (τ) in CdS thin films, P3OT and CdS/P3OT were estimated.
► Thinner P3OT film leads to a larger τ value at CdS/P3OT interface.
► The ambient oxygen may increase the charge recombination center density in P3OT.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 86, Issue 4, April 2012, Pages 1004–1009
نویسندگان
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