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    • 5. 发明申请
    • Stacked organic photosensitive devices
    • 堆叠有机光敏元件
    • US20060027801A1
    • 2006-02-09
    • US10911560
    • 2004-08-05
    • Stephen ForrestJiangeng XueSoichi UchidaBarry Rand
    • Stephen ForrestJiangeng XueSoichi UchidaBarry Rand
    • H01L29/08
    • B82Y10/00H01L27/302H01L51/0046H01L51/0051H01L51/0053H01L51/0059H01L51/0078H01L51/4246H01L51/4253Y02E10/549
    • A device is provided having a first electrode, a second electrode, a first photoactive region having a characteristic absorption wavelength λ1 and a second photoactive region having a characteristic absorption wavelength λ2. The photoactive regions are disposed between the first and second electrodes, and further positioned on the same side of a reflective layer, such that the first photoactive region is closer to the reflective layer than the second photoactive region. The materials comprising the photoactive regions may be selected such that λ1 is at least about 10% different from λ2. The device may further comprise an exciton blocking layer disposed adjacent to and in direct contact with the organic acceptor material of each photoactive region, wherein the LUMO of each exciton blocking layer other than that closest to the cathode is not more than about 0.3 eV greater than the LUMO of the acceptor material.
    • 提供一种器件,其具有第一电极,第二电极,具有特征吸收波长λ1的第一光活性区域和具有特征吸收波长λ2的第二光活性区域, 。 光活性区域设置在第一和第二电极之间,并且进一步定位在反射层的相同侧上,使得第一光活性区域比第二光活性区域更靠近反射层。 可以选择包含光活性区的材料,使得λ1至少与λ2不同10%。 该装置还可以包括邻近并与每个光活性区域的有机受体材料直接接触的激子阻挡层,其中除最接近阴极之外的每个激子阻挡层的LUMO不大于约0.3eV,大于约0.3eV 受体材料的LUMO。