[19a-P5-1~38] 12.5 Organic solar cells

▲ [19a-P5-4] Enhanced Performance of Polymer Solar Cells by Incorporating Metal Nanoparticles into PEDOT:PSS layer with Metallic Grating Top Electrode

〇(D)Thitirat Putnin^1,2, Kontad Ounnunkad², Chutiparn Lertvachirapaiboon¹, Kazunari Shinbo¹, Keizo Kato¹, Futao Kaneko¹, Akira Baba¹ (1.Niigata Univ., 2.Chiang Mai Univ.)

Keywords:solar cell,organic polymer solar cell,surface plasmon resonance

In this work, we studied the enhancement of organic thin film solar cells by surface plasmon resonance (SPR) phenomena originated from grating-coupled technique and further improved their performance by metal nanoparticles. The devices of Al/P3HT: PCBM/Metal NPs:PEDOT:PSS/ITO were fabricated. The results from J-V curves indicated that the power conversion efficiency (PCE) of Al-coated grating substrate was 3.10 % which was better than that of flat substrate for 1.55 times. We further developed the Al-coated grating substrate by incorporated gold and silver nanoparticles into PEDOT:PSS layer. The PCE of Al-coated grating substrate with gold nanoparticles and silver nanoparticles were 3.25% and 3.17%, respectively. This indicated that the light absorption enhancement at the active layer is attributed to SPR excitation with strong near-field distributions penetrated into absorption polymer, which could lead to higher efficiencies due to the increased absorption, thus resulting in better current generation.