SOLAR BATTERY

• Main Authors: HUANG SHAO-WEI, PEI SHANUANG, HSU WEIIH, LIN CHE-WEI
• Format: Patent
• Language: English; Japanese
• Published: 04.11.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

PROBLEM TO BE SOLVED: To provide an electrode structure that can suppress reduction of conversion efficiency due to positional displacement in a solar battery, and a manufacturing method for the same.SOLUTION: A solar battery includes a semiconductor substrate 101, a first-type dopant layer 102 and a second-type dopant layer 107 that are respectively disposed on two surfaces of the semiconductor substrate, a first passivation layer 103 located on the first type dopant layer, a first antireflection layer 104 positioned on the first passivation layer, a plurality of backside electrodes 106 penetrating through the first antireflection layer and the first passivation layer, a second passivation layer 108 located on the second type dopant layer 107, a second antireflection layer 109 located on the second passivation layer, and a plurality of surface electrodes penetrating through the second antireflection layer and the second passivation layer. The width of the back electrode located at the center is smaller than the width of the back electrode located on the side.SELECTED DRAWING: Figure 5 【課題】太陽電池における、位置ずれによる変換効率の低下を抑制する電極構造、及び、その製造方法を提供する。【解決手段】半導体基板１０１と、それぞれ半導体基板の２つの表面に設置される第１型ドーパント層１０２および第２型ドーパント層１０７と、第１型ドーパント層に位置する第１パッシベーション層１０３と、第１パッシベーション層に位置する第１反射防止層１０４と、第１反射防止層と第１パッシベーション層を貫通する複数の裏面電極１０６と、第２型ドーパント層１０７に位置する第２パッシベーション層１０８と、第２パッシベーション層に位置する第２反射防止層１０９と、第２反射防止層と第２パッシベーション層を貫通する複数の表面電極と、を備える。中央に位置する裏面電極の幅はサイドに位置する裏面電極の幅よりも小さい。【選択図】図５