Enhancing the device performance of Sb2S3-sensitized heterojunction solar cells by embedding Au nanoparticles in the hole-conducting polymer layer
文献情報
Choong-Sun Lim, Sang Hyuk Im, Hi-jung Kim, Jeong Ah Chang, Yong Hui Lee, Sang Il Seok
Performance of Sb2S3-sensitized heterojunction solar cells is enhanced by embedding Au nanoparticles in the poly-3-hexylthiophene (P3HT) hole-conducting polymer layer. The improved charge transfer/transport at the Sb2S3/P3HT/Au interface by extended interface area of the P3HT/Au counter electrode and the re-absorption of the backscattering light from the embedded Au nanoparticles enhanced the device performance: Jsc 11.0 to 12.8 mA cm−2, Voc 606 to 626 mV, fill factor (FF) 60.5 to 61.2%, and power conversion efficiency (η) 4.0 to 4.9%. Simultaneous enhancement of Voc, Jsc, and FF in Au nanoparticle-embedded systems is mainly attributed to the improved charge collection efficiency and light harvesting efficiency of Sb2S3 due to the improved charge transfer/transport in the Sb2S3/P3HT/Au interface.
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