Solar battery, and manufacturing method thereof

摘要: PROBLEM TO BE SOLVED: To provide a solar battery and the manufacturing method thereof for obtaining good characteristic of while reducing front-surface reflection its semiconductor substrate. SOLUTION: The has at least electrodes 107 present on side light receiving surface, substrate 101 having PN-junction many fine cavities 102 in rear-surface 106. Further, value ratio largest depth to diameter falls scope 0.5-2. COPYRIGHT: (C)2005,JPO&NCIPI