High Efficiency Hybrid Solar Cells Using Nanocrystalline Si Quantum Dots and Si Nanowires

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• 作者：Mrinal Dutta ; Lavanya Thirugnanam ; Pham Van Trinh ; Naoki Fukata
• 刊名：ACS Nano
• 出版年：2015
• 出版时间：July 28, 2015
• 年：2015
• 卷：9
• 期：7
• 页码：6891-6899
• 全文大小：497K
• ISSN：1936-086X

文摘

We report on an efficient hybrid Si nanocrystal quantum dot modified radial p鈥搉 junction thinner Si solar cell that utilizes the advantages of effective exciton collection by energy transfer from nanocrystal-Si (nc-Si) quantum dots to underlying radial p鈥搉 junction Si nanowire arrays with excellent carrier separation and propagation via the built-in electric fields of radial p鈥搉 junctions. Minimization of recombination, optical, and spectrum losses in this hybrid structure led to a high cell efficiency of 12.9%.