کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
78127 | 49317 | 2014 | 6 صفحه PDF | دانلود رایگان |
• Light harvesting is enhanced toward low IPCE region(400–500 nm).
• A high efficiency of 4.84% with an enhancement of 14.2% is obtained.
• The average transmittance is 25.4% in visible range(400–700 nm).
In this study, we demonstrate a light harvesting method to achieve efficient semitransparent polymer solar cells (STPSCs) based on PCDTBT: PC70BM by employing one-dimensional photonic crystals (1DPCs) as reflector. The 1DPCs were constructed by N pairs of WO3/LiF, a pair means a combination of WO3 and LiF, including a layer of WO3 film and a layer of LiF film. By optimizing the number of pairs, a 1DPC with high reflectance region (400–500 nm), which is exactly matched with the weak region of the (incident photon-to-electron conversion) IPCE spectrum of the reference STPSC is obtained. In contrast, the excellent STPSC with 8 pairs of 1DPC exhibited a high efficiency about 4.84% and hold an average transmittance of 25.4% in the visible range (400–700 nm).
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Journal: Solar Energy Materials and Solar Cells - Volume 127, August 2014, Pages 27–32