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    • 3. 发明专利
    • Solar cell
    • 太阳能电池
    • JP2010080761A
    • 2010-04-08
    • JP2008248757
    • 2008-09-26
    • Toshiba Corp株式会社東芝
    • NISHIDA YASUTAKAINABA MICHIHIKOSAKURADA SHINYAITO SATOSHI
    • H01L31/04
    • H01L31/0321H01L31/0296H01L31/0322H01L31/0323H01L31/072H01L31/073Y02E10/541Y02E10/543
    • PROBLEM TO BE SOLVED: To provide a novel material and design which exceed a conversion efficiency of 40.7% that has been regarded as the upper limit value for the conversion efficiency for a single-cell solar battery material.
      SOLUTION: In a solar battery comprising p-type and n-type semiconductors jointed, the p-type semiconductor is a wide-band compound having a wide band of 1.5 eV or more, in a band gap width and having a chalcopyrite structure forming an intermediate level different from the impurity level in a gap. In the wide-band compound, an element with an electronegativity of 1.9 or more is included, a part of negative elements in a crystal lattice is replaced by another negative element, having a different electronegativity, and the replacement can form the intermediate level.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种超过单体太阳能电池材料的转换效率的上限值的40.7%的转换效率的新颖的材料和设计。 解决方案:在包括p型和n型半导体的太阳能电池中,p型半导体是具有1.5eV或更大宽带的宽带化合物,带隙宽度并具有黄铜矿 形成与间隙中的杂质水平不同的中间水平的结构。 在宽带化合物中,包含电负性为1.9以上的元素,晶格中的负极元素的一部分被具有不同电负性的另一负极元素代替,并且置换可以形成中间电平。 版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Photoelectric conversion element and solar cell
    • 光电转换元件和太阳能电池
    • JP2013106013A
    • 2013-05-30
    • JP2011251149
    • 2011-11-16
    • Toshiba Corp株式会社東芝
    • HIRAGA HIROKISHIBAZAKI SOICHIRONAKAGAWA NAOYUKIYAMAZAKI MUTSUKIYAMAMOTO KAZUESAKURADA SHINYAINABA MICHIHIKO
    • H01L31/04
    • H01L31/022425H01L31/0322H01L31/0323H01L31/068H01L31/0749Y02E10/541Y02E10/547
    • PROBLEM TO BE SOLVED: To provide a photoelectric conversion element improving conversion efficiency, and further to provide a solar cell.SOLUTION: According to one embodiment, there is provided a photoelectric conversion element comprising: a first electrode having optical transparency; a second electrode; and a light absorption layer. The light absorption layer is provided between the first electrode and the second electrode. The light absorption layer contains a chemical compound semiconductor that contains a first element of the 11th group elements and a second element of the 16th group elements and has a chalcopyrite structure or a Sutanaito structure. The light absorption layer includes a p-type portion and an n-type portion. The n-type portion is provided between the p-type portion and the first electrode. The n-type portion forms a p-n homojunction with the p-type portion. The n-type portion contains dopant. The dopant is an element having a formal charge Vb obtained by a Bond Valence Sum calculation not less than 1.60 and not greater than 2.83.
    • 要解决的问题:提供一种提高转换效率的光电转换元件,并且还提供一种太阳能电池。 解决方案:根据一个实施例,提供了一种光电转换元件,包括:具有光学透明度的第一电极; 第二电极; 和光吸收层。 光吸收层设置在第一电极和第二电极之间。 光吸收层含有含有第11组元素的第一元素和第16族元素的第二元素,具有黄铜矿结构或Sutanaito结构的化合物半导体。 光吸收层包括p型部分和n型部分。 n型部分设置在p型部分和第一电极之间。 n型部分与p型部分形成p-n同型结。 n型部分含有掺杂剂。 掺杂剂是具有通过债券价值和计算得到的形式充电Vb不小于1.60且不大于2.83的元素。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Production process of cis-based thin film solar cell
    • 基于CIS的薄膜太阳能电池的生产工艺
    • JP2009283508A
    • 2009-12-03
    • JP2008131269
    • 2008-05-19
    • Showa Shell Sekiyu Kk昭和シェル石油株式会社
    • HAKUMA HIDEKITANAKA YOSHIAKIKURIYAGAWA SATORU
    • H01L31/04
    • H01L31/0749H01L31/022425H01L31/0323H01L31/03923Y02E10/541Y02P70/521
    • PROBLEM TO BE SOLVED: To provide a production process of a CIS-based thin film solar cell which attains high photoelectric conversion efficiency by adding an alkali element to a light absorption layer by easy and excellent controllability.
      SOLUTION: A production process of a CIS-based thin film solar cell includes steps for forming a back surface electrode layer (2) on a substrate (1), for forming a p-type CIS-based light absorption layer (3) on the back surface electrode layer, and for forming an n-type transparent conductive film (5) on the p-type CIS-based light absorption layer (3), wherein the step of forming a back surface electrode layer (2) consists of a step of forming a first electrode layer (21) by using a back surface electrode material admixed with an alkali metal, and a step of forming a second electrode layer (22) by using the back surface electrode material substantially containing no alkali metal.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供通过容易且优异的控制性将碱性元素添加到光吸收层而获得高光电转换效率的CIS系薄膜太阳能电池的制造方法。 解决方案:基于CIS的薄膜太阳能电池的制造方法包括在基板(1)上形成背面电极层(2)的步骤,用于形成p型CIS系的光吸收层(3) ),并且在p型CIS系吸光层(3)上形成n型透明导电膜(5),其特征在于,形成背面电极层(2)的工序为 通过使用与碱金属混合的背面电极材料形成第一电极层(21)的步骤,以及通过使用基本不含碱金属的背面电极材料形成第二电极层(22)的步骤。 版权所有(C)2010,JPO&INPIT