Enhanced effect of 1,2-dichlorobenzene on the property of PC61BM and perovskite films for planar heterojunction perovskite solar cells
Enhanced effect of 1,2-dichlorobenzene on the property of PC61BM and perovskite films for planar heterojunction perovskite solar cells
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DOI：
10.1016/j.orgel.2019.105543
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发表时间：
2020-02
影响因子：
3.2
通讯作者：
Dan Chen;Taoran Liu;Y. Zuo;X. Zou;Jun Zheng;B. Cheng
中科院分区：
文献类型：
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作者：
Dan Chen;Taoran Liu;Y. Zuo;X. Zou;Jun Zheng;B. Cheng
PC61 BM作为一种常用的电子选择性材料在以前的文章中已经被广泛讨论。然而，使用氯苯（CB）溶剂的PC 61 BM的较差的膜覆盖率仍然限制了钙钛矿太阳能电池（PSC）的光电性能。本文研究了1，2-二氯苯（o-DCB）作为PC 61 BM前驱体的溶剂对制备高质量PC 61 BM层的影响，以期获得一种制备高质量PC 61 BM层的有效方法。此外，使用CB和o-DCB溶剂的不同PC 61 BM层的形貌和不同PC 61 BM衬底上沉积的钙钛矿薄膜的性质进行了研究。对于基于CB和o-DCB制备的PC61 BM层的PSC的性能，前体中PC61 BM的最佳浓度分别为15 mg/mL和20 mg/mL。在所有样品中，制备了基于20 mg/mL PC61 BM层的冠军PSC，其使用具有氟掺杂氧化锡（FTO）基底/致密TiO 2/PC61 BM/FAxMA 1-xPbIyBrzCl 3-y-z/2，2 ′，7，7 ′-四-（N，N-二-对甲氧基苯胺）− 9，9 ′-螺二芴（Spiro-OMeCl 3）/Au结构的o-DCB。与没有PC61 BM层的样品（8.34%）和使用CB溶剂的具有15 mg/mL PC61 BM层的器件（14.03%）相比，其实现了16.17%的功率转换效率（PCE）。我们预计，o-DCB的引入可能会成为一个有前途的方法，在未来的高效PSC。
PC61BM used as a common electron selective material has been widely discussed in previous articles. However, the inferior film coverage of PC61BM using chlorobenzene (CB) solvent still restricts the photoelectric property of the perovskite solar cells (PSCs). In this paper, the effect of 1,2-dichlorobenzene (o-DCB) used as the solvent of PC61BM precursor is investigated in order to get an efficient method to fabricated high-quality PC61BM layer which is crucial for low-temperature PSCs. Furthermore, the morphologies of diverse PC61BM layers using CB and o-DCB solvents and the properties of perovskite films deposited on different PC61BM substrates are studied. For the performance of PSCs based on the PC61BM layers fabricated by CB and o-DCB, the optimal PC61BM concentrations in precursor are 15 mg/mL and 20 mg/mL, respectively. In all samples, the champion PSCs based on 20 mg/mL PC61BM layer using o-DCB with the structure of fluorine-doped tin oxide (FTO) substrate/compact TiO2/PC61BM/FAxMA1-xPbIyBrzCl3-y-z/2,2′,7,7′-tetrakis- (N,N-di-p-methoxyphenylamine) −9,9′-spirobifluorene (Spiro-OMeTAD)/Au are prepared. It has achieved a power conversion efficiency (PCE) of 16.17% compared with that from the sample without PC61BM layer (8.34%) and the device with 15 mg/mL PC61BM layer using CB solvent (14.03%). We anticipate that the introduction of o-DCB would possibly become a promising method for high efficient PSCs in the future.