Structural and optical properties of 6,13-pentacenequinone film
Structural and optical properties of 6,13-pentacenequinone film
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6,13-并五苯醌薄膜的结构和光学性质
DOI：
10.1016/j.apsusc.2004.09.163
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发表时间：
2005
影响因子：
6.7
通讯作者：
S. Im
中科院分区：
文献类型：
--
作者：
D. Hwang;Kibum Kim;Jwa;D. Jung;Eugene Kim;S. Im
我们报道了室温下通过热蒸发沉积在 n-Si 上的 6,13-并五苯醌薄膜的结构和光学性质。根据X射线衍射，发现薄膜具有良好的结晶度，并且还具有两种混合的结晶相。光致发光（PL）光谱在1.97和2.09eV处表现出双峰，而从直接吸收光谱在2.94和3.11eV处观察到与最高占据分子轨道（HOMO）、最低未占据分子轨道（LUMO）跃迁相关的相应（双）峰。在紫外线照射下，PL 强度非常强。该有机晶体体系中似乎还存在约 1eV 的大斯托克斯位移。在 n-Si 上使用 6,13-并五苯醌薄膜的 Au/有机/n-Si 结构表现出整流行为，但由于有机薄膜中存在许多陷阱，因此具有相对较高水平的漏电流。
We report on the structural and optical properties of 6,13-pentacenequinone film deposited on n-Si by thermal evaporation at room temperature. According to X-ray diffraction, films were found to have good crystallinity and also to have two crystalline phases mixed. Photoluminescence (PL) spectra exhibited double peaks at 1.97 and 2.09eV while the corresponding (double) peaks related to highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) transition were observed from direct absorption spectra at 2.94 and 3.11eV. The PL intensity was very strong under a UV illumination. It also seems that such a large Stokes shift as ∼1eV exist in this organic crystal system. Au/organic/n-Si structures using 6,13-pentacenequinone films on n-Si showed rectifying behavior but with a relatively high level of leakage current due to many traps in the organic film.