Title :
Absorption and transport enhancement by Ag nanoparticle plasmonics for organic optoelectronics
Author :
Mei Xue ; Huajun Shen ; Jinfeng Zhu ; SeongKu Kim ; Lu Li ; Zhibin Yu ; Qibing Pei ; Wang, K.L. ; Qasem, H. ; Alzaben, A.A. ; Enaya, H. ; Otaibi, Z.S.A.
Author_Institution :
Dept. of Electr. Eng., Univ. of California, Los Angeles, CA, USA
Abstract :
The organic films such as P3HT/PCBM incorporating Ag metal nanoparticles are fabricated and experimentally characterized. Due to the excited surface plasma induced by Ag metal nanoparticles, the absorption of the active organic material layer is increased by around 30%. The broadened absorption spectrum to the 260-650nm wavelength range is also observed from our measurements because of the enhanced scattering cross section by Ag metal nanoparticles. Furthermore, by incorporating Ag nanoparticles into the active layer, the mobility have also been improved. Finite Difference Time Domain (FDTD) simulations confirm the increase in transmission of electromagnetic radiation at visible wavelength. The hopping model is proposed to explain the transport mechanism for the device operations. These observations suggest a variety of approaches for improving the performance of general organic optoelectronic devices.
Keywords :
finite difference time-domain analysis; hopping conduction; nanoparticles; optoelectronic devices; plasma materials processing; plasmonics; polymer films; polymers; silver; solar cells; Ag; active organic material layer; electromagnetic radiation; excited surface plasma; finite difference time domain simulations; hopping model; metal nanoparticles; nanoparticle plasmonics; organic films; organic optoelectronic devices; organic optoelectronics; transport enhancement; transport mechanism; visible wavelength; wavelength 260 nm to 650 nm; Absorption; Finite difference methods; Metals; Nanoparticles; Photovoltaic cells; Plasmons; Time domain analysis; absorption; metal nanoparticle; organic solar cell; surface plasma; transport;
Conference_Titel :
Electronics, Communications and Photonics Conference (SIECPC), 2011 Saudi International
Conference_Location :
Riyadh
Print_ISBN :
978-1-4577-0068-2
Electronic_ISBN :
978-1-4577-0067-5
DOI :
10.1109/SIECPC.2011.5876955
