继2013年UCLA杨阳组创造10.6%的双结聚合物太阳能电池记录[1]后,他们最近又进一步制备高达11.5%的三结聚合物太阳能电池,发表在近期的先进材料(Advanced Materials)上[2]。通过合理选择以下三种光伏材料,可以实现对太阳光的全吸收。
(a) 宽带隙聚合物:P3HT
(b) 中带隙聚合物:PTB7-Th
(c) 窄带隙聚合物:PDTP-DFBT
Tandem solar cells have the potential to improve photon conversion efficiencies (PCEs) beyond the limits of single-junction devices. In this study, a triple-junction tandem design is demonstrated by employing three distinct organic donor materials having bandgap energies ranging from 1.4 to 1.9 eV. Through optical modeling, balanced photon absorption rates are achieved and, thereby, the photo-currents are matched among the three subcells. Accordingly, an efficient triple-junction tandem organic solar cell can exhibit a record-high PCE of 11.5%.
【1】You, J.; Dou, L.; Yoshimura, K.; Kato, T.; Ohya, K.; Moriarty, T.; Emery, K.; Chen, C.-C.; Gao, J.; Li, G.; Yang, Y., A polymer tandem solar cell with 10.6% power conversion efficiency. Nat. Commun. 2013, 4, 1446.
【2】Chen, C.-C.; Chang, W.-H.; Yoshimura, K.; Ohya, K.; You, J.; Gao, J.; Hong, Z.; Yang, Y., An Efficient Triple-Junction Polymer Solar Cell Having a Power Conversion Efficiency Exceeding 11%. Adv. Mater. 2014, DOI: 10.1002/adma.201402072. 【Pdf】![Advacned Materials: 三结聚合物太阳能电池突破11.5%]()
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![Advacned Materials: 三结聚合物太阳能电池突破11.5%-1]()
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