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Karakteristik arus tegangan dioda blend organik berbasis thyophene dan fullerene

SETYA, Winda, Dr. Kuwat Triyana

2009 | Tesis | S2 Ilmu Fisika

Telah dilakukan penelitian karakteristik arus-tegangan dari dioda blend organik berbasis poly (3-octyl thiophene) (P3OT) dan (6,6) phenyl C71 butyric acid methyl ester (PCBM). Pada penelitian ini, lapisan blend P3OT:PCBM dideposisikan diantara elektroda transparan indium tin oxide (ITO) dan Al sebagai kontak. Karakteristik arus tegangan dioda dilakukan pada keadaan gelap dan terang. Penentuan parameter kelistrikan dioda ditentukan dengan model rangkaian ekivalen dioda anorganik. Dari hasil kajian, ketebalan lapisan P3OT:PCBM berpengaruh pada penurunan hambatan seri dioda dan peningkatan rapat arus saturasi dioda. Penelitian ini juga membandingkan pengaruh perubahan suhu ketika fabrikasi lapisan tipis. Selain itu, juga diteliti pengaruh penyinaran pada karakteristik arus tegangan. Hasil ini bermanfaat untuk lebih memahami mekanisme fisis, yang pada gilirannya meningkatkan performa dan pengembangan dioda organik.

Current-voltage characteristics of organic diode based on blend of poly (3-octyl thiophene) (P3OT) and (6,6) phenyl C71 butyric acid methyl ester (PCBM) was investigated. In this case, the blend of P3OT:PCBM was sandwiched between a transparent indium tin oxide (ITO) electrode and an Al backside contact. The current-voltage characteristic of the diode was measured under the dark and illumination. In order to determine the electrical parameters of the diode, we employed an equivalent circuit model developed originally for inorganic diode. As a result, the series resistance decreases while the reverse saturation current density increases by decreasing the thickness of P3OT:PCBM layer. For comparison, we also investigate the effect of annealing treatment during film fabrication. Furthermore, effect of illumination on the current-voltage characteristic is also studied. This result may be useful for improving the performance of developing organic diode.

Kata Kunci : Dioda organik,P3OT,PCBM,Rangkaian ekivalen,Karakteristik arus tegangan, organic diode, P3OT, PCBM, equivalent circuit, current-voltage characteristic


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