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Noncovalent phosphorylation of graphene oxide with improved hole transport in high-efficiency polymer solar cells†
Nanoscale ( IF 5.8 ) Pub Date : 2018-07-20 00:00:00 , DOI: 10.1039/c8nr02638f Xiang Chen 1, 2, 3, 4, 5 , Qing Liu 1, 2, 3, 4, 5 , Mengmeng Zhang 1, 2, 3, 4, 5 , Huanxin Ju 5, 6, 7, 8 , Junfa Zhu 5, 6, 7, 8 , Qiquan Qiao 9, 10, 11, 12, 13 , Mingtai Wang 8, 14, 15, 16, 17 , Shangfeng Yang 1, 2, 3, 4, 5
Nanoscale ( IF 5.8 ) Pub Date : 2018-07-20 00:00:00 , DOI: 10.1039/c8nr02638f Xiang Chen 1, 2, 3, 4, 5 , Qing Liu 1, 2, 3, 4, 5 , Mengmeng Zhang 1, 2, 3, 4, 5 , Huanxin Ju 5, 6, 7, 8 , Junfa Zhu 5, 6, 7, 8 , Qiquan Qiao 9, 10, 11, 12, 13 , Mingtai Wang 8, 14, 15, 16, 17 , Shangfeng Yang 1, 2, 3, 4, 5
Affiliation
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Graphene oxide (GO) has been extensively applied as an alternative hole transport layer (HTL) of bulk heterojunction polymer solar cells (BHJ-PSCs) with the function of selectively transporting holes and blocking electrons, but suffers from low electrical conductivity. Herein, using phosphorus pentoxide (P2O5) dissolved in methanol as a precursor, we successfully modified GO via noncovalent phosphorylation for the first time, which showed improved hole transport in BHJ-PSCs compared to the pristine GO. As a result, BHJ-PSC devices based on noncovalently phosphorylated GO (P-GO) HTL show dramatically higher power conversion efficiencies (7.90%, 6.59%, 3.85% for PTB7:PC71BM, PBDTTT-C:PC71BM, P3HT:PC61BM, respectively) than those of the corresponding control devices based on the pristine GO HTL (6.28%, 5.07%, 2.78%), which are comparable to those of devices based on the most widely used HTL—poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS).
中文翻译：
高效聚合物太阳能电池中氧化石墨烯的非共价磷酸化具有改善的空穴传输能力†
氧化石墨烯（GO）已被广泛用作块状异质结聚合物太阳能电池（BHJ-PSC）的替代空穴传输层（HTL），具有选择性传输空穴和阻挡电子的功能，但导电性低。在这里，我们使用溶解在甲醇中的五氧化二磷（P 2 O 5）作为前体，首次成功地通过非共价磷酸化修饰了GO ，与原始GO相比，BHJ-PSC中的空穴传输得到了改善。结果，基于非共价磷酸化GO（P-GO）HTL的BHJ-PSC器件显示出显着更高的功率转换效率（PTB7：PC 71 BM，PBDTTT-C：PC 71 BM，P3HT分别为7.90％，6.59％，3.85％：个人电脑分别比基于原始GO HTL的相应控制设备（分别为6.28％，5.07％，2.78％）要高61 BM，这与基于最广泛使用的HTL-poly（3,4-乙二氧基噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）。
更新日期：2018-07-20
中文翻译：
高效聚合物太阳能电池中氧化石墨烯的非共价磷酸化具有改善的空穴传输能力†
氧化石墨烯（GO）已被广泛用作块状异质结聚合物太阳能电池（BHJ-PSC）的替代空穴传输层（HTL），具有选择性传输空穴和阻挡电子的功能，但导电性低。在这里，我们使用溶解在甲醇中的五氧化二磷（P 2 O 5）作为前体，首次成功地通过非共价磷酸化修饰了GO ，与原始GO相比，BHJ-PSC中的空穴传输得到了改善。结果，基于非共价磷酸化GO（P-GO）HTL的BHJ-PSC器件显示出显着更高的功率转换效率（PTB7：PC 71 BM，PBDTTT-C：PC 71 BM，P3HT分别为7.90％，6.59％，3.85％：个人电脑分别比基于原始GO HTL的相应控制设备（分别为6.28％，5.07％，2.78％）要高61 BM，这与基于最广泛使用的HTL-poly（3,4-乙二氧基噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）。
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