SOLAR CELL ELEMENT

• Main Authors: MATSUOKA RYO, ISHIKAWA SHINYA, SATO JUNPEI
• Format: Patent
• Language: English; Japanese
• Published: 22.04.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

To improve the quality of a passivation layer in a solar cell element.SOLUTION: A solar cell element 10 comprises: a semiconductor substrate 1; a passivation layer 9; and a protective layer 11. The semiconductor substrate has a p-type semiconductor region 2 on its surface. The passivation layer is located on the p-type semiconductor region and includes aluminum oxide. The protective layer is located on the passivation layer and includes silicon oxide. The protective layer includes one or more double bonds selected from a double bond of carbon and oxygen, a double bond of carbon and carbon, and a double bond of carbon and nitrogen.SELECTED DRAWING: Figure 8 【課題】太陽電池素子におけるパッシベーション層の品質を向上させる。【解決手段】太陽電池素子１０は、半導体基板１と、パッシベーション層９と、保護層１１と、を備えている。半導体基板は、表面にｐ型半導体領域２を有する。パッシベーション層は、ｐ型半導体領域の上に位置し、酸化アルミニウムを含んでいる。保護層は、パッシベーション層の上に位置し、酸化シリコンを含んでいる。保護層は、炭素と酸素との二重結合、炭素と炭素との二重結合および炭素と窒素との二重結合から選択される１種以上の二重結合を含んでいる。【選択図】図８