کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7935360 1513052 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Efficient planar perovskite solar cells based on low-cost spin-coated ultrathin Nb2O5 films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Efficient planar perovskite solar cells based on low-cost spin-coated ultrathin Nb2O5 films
چکیده انگلیسی
In planar perovskite solar cells (PSCs), the electron transport layer (ETL), with the function of transporting electrons and blocking holes, plays a significant role in determining the photoelectric conversion properties. Thus, it is crucial to exploit potential ETL materials for improved performance. Herein, we demonstrate efficient planar PSCs employing ultrathin Nb2O5 films as ETLs fabricated by a facile spin-coating method. The effects of the precursor concentration and annealing time of Nb2O5 on the photovoltaic performance are investigated in detail. The planar PSCs constructed with 0.02 M-prepared Nb2O5 films sintered for 1 h possess an optimized performance, giving rise to a champion efficiency of 14.82% with high reproducibility. The superior performance is ascribed to the appropriate conduction band position of Nb2O5, high transmittance, increased charge transport, and diminished charge recombination of the Nb2O5 film. The results demonstrate that the utilization of spin-coated Nb2O5 as the ETL provides a new platform to construct highly-efficient planar PSCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 166, 15 May 2018, Pages 187-194
نویسندگان
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