PHOTOELECTRIC CONVERSION ELEMENT, IMAGING ELEMENT AND IMAGING DEVICE

• Main Authors: ITO KENTARO, TAKAHASHI TETSUO, KAMATANI ATSUSHI, YAMADA NAOKI, YAMAGUCHI CHINA, ORUI HIROKI, KAJIMOTO NORIFUMI, SHIOBARA SATORU, MIYASHITA HIROKAZU, NISHIDE YOSUKE, IWAWAKI HIRONOBU, ITABASHI MASUMI
• Format: Patent
• Language: English; Japanese
• Published: 31.05.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; BASIC ELECTRIC ELEMENTS; CHEMISTRY; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEMICONDUCTOR DEVICES; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING

PROBLEM TO BE SOLVED: To provide a photoelectric conversion element having a low dark current, and an imaging element and an imaging device including the photoelectric conversion element.SOLUTION: A photoelectric conversion element comprises an anode, a cathode and a photoelectric conversion layer that is arranged between the anode and the cathode. The photoelectric conversion layer contains a first organic compound and a second organic compound, and the oxidation potential of the first organic compound is lower than the oxidation potential of the second organic compound. ΔE expressed by formula: ΔE=(oxidation potential of first organic compound)-(reduction potential of second organic compound) satisfies formula: ΔE≥1.5[V]. The first organic compound is one of a compound represented by general formula [1], a fluoranthene derivative, or a metal complex. In general formula [1], Rrepresents a hydrogen atom or a substituent; each of Ar, Ar, and Zrepresents a substituent; each of nand nrepresents an integer of from 0 to 4; and each of Xto Xrepresents a nitrogen atom, a sulfur atom, an oxygen atom or a carbon atom.SELECTED DRAWING: None 【課題】低暗電流の光電変換素子、それを有する撮像素子、撮像装置を提供する。【解決手段】アノードと、カソードと、アノードとカソードとの間に配置されている光電変換層と、を有する光電変換素子であって、光電変換層は第一の有機化合物と第二の有機化合物とを有し、第一の有機化合物の酸化電位は、第二の有機化合物の酸化電位よりも小さく、ΔＥ＝第一の有機化合物の酸化電位−第二の有機化合物の還元電位、としたとき、ΔＥ≧１．５［Ｖ］をみたす。第一の有機化合物は、一般式［１］で表される化合物、フルオランテン誘導体、金属錯体のいずれかである。Ｒ１は水素原子または置換基を表す。Ａｒ１、Ａｒ２、Ｚ１は置換基を表す。ｎ１及びｎ２は０乃至４までの整数を表す。Ｘ１乃至Ｘ３は窒素原子、硫黄原子、酸素原子または炭素原子を表す。【選択図】なし