Nanostructured Singlet Fission Photovoltaics Subject to Triplet‐Charge Annihilation
Nanostructured Singlet Fission Photovoltaics Subject to Triplet‐Charge Annihilation
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DOI：
10.1002/adma.201304588
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发表时间：
2014-03
影响因子：
29.4
通讯作者：
N. Thompson;E. Hontz;Daniel N. Congreve;M. Bahlke;S. Reineke;T. Van Voorhis;M. Baldo
中科院分区：
文献类型：
--
作者：
N. Thompson;E. Hontz;Daniel N. Congreve;M. Bahlke;S. Reineke;T. Van Voorhis;M. Baldo
单重态激子裂变是一种有效的多激子产生过程，但易受三重态电荷湮灭的特征损失过程的影响。这种损失过程的特点是在单重态裂变photoprophics和高达40%的损失，观察到设计不良的设备。技术证明，以提高电荷提取和减少三重态电荷湮灭到可以忽略不计的水平在短路条件下。
Singlet exciton fission is an efficient multiple-exciton generation process that is vulnerable to a characteristic loss process: triplet-charge annihilation. This loss process is characterized in singlet-fission photovoltaics and losses as high as 40% are observed in poorly designed devices. Techniques are demonstrated to improve charge extraction and reduce triplet-charge annihilation to negligible levels at short-circuit conditions.