A temperature dependent study on charge dynamics in organic molecular device: Effect of shallow traps on space charge limited behavior

作者：Mukherjee A K^*; Kavala A K

来源：International Journal of Modern Physics B, 2014, 28(15): 1450088.

DOI：10.1142/S021797921450088X

• Mobility
• shallow trap
• Poole-Frenkel
• pentacene

Shallow traps play a significant role in influencing charge dynamics through organic molecular thin films, such as pentacene. Sandwich cells of pentacene capped by gold electrodes are an excellent specimen to study the nature of underlying charge dynamics. In this paper, self-consistent numerical simulation of I-V characteristics is performed at various temperatures. The results have revealed negative value of Poole Frenkel coefficient. The location of trap energy level is found to be located at 0.24 eV above the highest occupied molecular orbit (HOMO) level of pentacene. Other physical parameters related to trap levels, such as density of states due to traps and effective carrier density due to traps, have also been estimated in this study.

• 出版日期2014-6-20