Fridkin V M, Litvinenko V Y
Appl Opt. 1969 Jan 1;8 Suppl 1:166-9.
Anthracene was the first photoconductor on which Carlson obtained electrophotographic images in 1938. Kallmann and his co-workers demonstrated that, using electrolytes as contacts for aromatic hydrocarbons, carrier injection into the crystal takes place. In the present paper, conditions for injection of electrons and holes into organic semiconductors from electrolytic contacts in which photochemical reactions are going on are analyzed. Specifically, anthracene and iodous hydrogen acid are examined. It has been shown that, using iodous hydrogen acid as a positive electrode, the photochemical reaction of decomposing molecular iodine into atoms leads to the injection of holes into anthracene. This phenomenon has been used to establish a new method of obtaining the latent electrophotographic image in anthracene. In these experiments, a solution of partly decomposed iodous hydrogen acid with various iodine contents was used as a substratum of the electrophotographic layer (anthracene). The surface of the layer was charged with the negative oxygen ions from the corona discharge in the air. The layer was exposed in the visible region (lambda=6500 A), where the photodissociation takes place. As this dissociation leads to the increasing density of the injection current from the electrolyte into the crystal, the illumination of the system in the visible region results in the fast discharge of the layer although the conductivity of the anthracene proper is insignificant in the visible region. Thus, the phenomenon of the photoactive electrolyte injecting holes into a crystal enables the formation of latent electrophotographic images in the visible part of the spectrum. In this paper, the kinetics of the discharge of the anthracene in the conditions of injection and the fulfillment of the reciprocity law have been investigated.
蒽是卡尔森于1938年获得电子照相图像的第一种光电导体。卡尔曼及其同事证明，使用电解质作为芳烃的接触体时，会发生载流子注入晶体的现象。在本文中，分析了在进行光化学反应的电解接触中向有机半导体注入电子和空穴的条件。具体研究了蒽和亚碘酸。结果表明，以亚碘酸作为正极，将分子碘分解为原子的光化学反应会导致空穴注入蒽中。这一现象已被用于建立一种在蒽中获得电子照相潜像的新方法。在这些实验中，使用含有不同碘含量的部分分解的亚碘酸溶液作为电子照相层（蒽）的基质。该层表面通过空气中的电晕放电带上负氧离子。该层在可见光区域（λ = 6500 Å）曝光，在此发生光解离。由于这种解离导致从电解质到晶体的注入电流密度增加，尽管蒽本身在可见光区域的电导率微不足道，但系统在可见光区域的光照会导致该层快速放电。因此，光活性电解质向晶体注入空穴的现象能够在光谱的可见光部分形成电子照相潜像。在本文中，研究了蒽在注入条件下的放电动力学以及互易定律的实现情况。
