InGaN/GaN multiple quantum well solar cells with long operating wavelengths

R. Dahal, B. Pantha, J. Li, J. Y. Lin, H. X. Jiang

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We report on the fabrication and photovoltaic characteristics of InGaN solar cells by exploiting InGaN/GaN multiple quantum wells (MQWs) with In contents exceeding 0.3, attempting to alleviate to a certain degree the phase separation issue and demonstrate solar cell operation at wavelengths longer than previous attainments (>420 nm). The fabricated solar cells based on In 0.3 Ga0.7 N/GaN MQWs exhibit an open circuit voltage of about 2 V, fill factor of about 60%, and an external efficiency of 40% (10%) at 420 nm (450 nm).

Original languageEnglish
Article number063505
JournalApplied Physics Letters
Issue number6
StatePublished - 2009


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