多结太阳能电池外延结构

• Format: Patent
• Language: Chinese
• Published: 19.12.2017
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

公开了种多结太阳能电池外延结构，包括：下层子电池；缓冲层；和上层子电池，所述上层子电池的晶格常数与下层子电池的晶格常数不匹配，并且所述上层子电池以所述下层子电池为基底进行生长；其中，缓冲层位于下层子电池和上层子电池之间，被配置用于减小由下层子电池和上层子电池之间的晶格失配引起的缺陷；其中，所述缓冲层包括靠近下层子电池设置的反向缓冲区，所述反向缓冲区的晶格常数与下层子电池的晶格常数相匹配。本发明的多结太阳能电池外延结构能够减小在多结太阳能电池中由于上下层子电池之间晶格不匹配引起的在下层子电池中的缺陷，从而提高整个电池的效率。