Structural and optical properties of layers of pentacene formed by PLD method

Abstract

Abstract:Organic films fabrication offers the possibility of producing electronic devices of low weight, mechanical flexibility and low cost. One suitable material for organic film fabrigation which is the subject of the great interest is pentacene, because it is characterized by the large carrier mobility (∼1 cm 2 /Vs) . In this work, the growth of pentacene layers using pulse laser deposition (PLD) on different substrates (glass/ITO, Si) is described and various processing parameters are investigated . Two pulsed YAG:Nd 3+ laser wavelengths were used for the ablation of the PLD target: the first harmonic at 1064 nm and the second at 532 nm. The structure of the layers formed was examined using SEM and RHEED methods. The results were compared with results of optical spectroscopy studies. It will be shown that layers deposed using second harmonics have a higher quality than those for first harmonic. The other PLD parameters also have a strong influence on the structure quality of layers. 78.66.Qn, 81.15.Fg, 68.37.Hk PACS (2008):

Nonlinear behavior during semi‐quantitative analysis of thin organic layers by laser desorption mass spectrometry

“…Organic thin films are currently the subject of intense studies due to their potential use in new kinds of electronic devices. Organic thin films have so far proven useful in a number of applications: organic light emitting diodes, organic thin film transistors, low cost and efficient organic solar cells, as well as in supported catalyst research . Some of them are now reaching the consumer market.…”