Stability of diketopyrrolopyrrole small-molecule inverted organic solar cells
Stability of diketopyrrolopyrrole small-molecule inverted organic solar cells
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DOI：
10.1016/j.orgel.2016.05.022
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发表时间：
2016-08-01
影响因子：
3.2
通讯作者：
Matsuo, Yutaka
中科院分区：
文献类型：
--
作者：
Jeon, Il;Sakai, Ryohei;Matsuo, Yutaka
制备了基于小分子DPP(TBFu)(2)的倒置有机太阳能电池并研究了其稳定性。比较了热退火和溶剂退火对器件性能和稳定性的影响。为了提高稳定性，还包括了混合 PCBM（PC61BM 及其 C-70 类似物），据报道可以提供更高的器件稳定性。溶剂退火器件的功率转换效率 (PCE) 最高，为 4.62%，而热退火器件的 PCE 为 3.94%。在涉及热应力和暴露于空气的老化过程之后，热退火和混合 PCBM 器件的 PCE 保持在 3%，而溶剂退火器件的 PCE 则低得多，为 1.7%。因此，我们的结果表明，从长期稳定性角度来看，热退火优于溶剂退火，并且在 DPP(TBFu)(2) 的情况下，mix-PCBM 优于 PC61BM。我们制造了小分子倒置有机太阳能电池，无需封装即可在空气中保持其性能 3 周。 (C) 2016 Elsevier B.V. 保留所有权利。
Small-molecule DPP(TBFu)(2)-based inverted organic solar cells were fabricated and their stability investigated. The effects of thermal annealing and solvent annealing on device performance and stability were compared. To increase the stability, mix-PCBM (PC61BM and its C-70 analogue), which is reported to give higher device stability, was also included. Solvent-annealed devices showed the highest power conversion efficiency (PCE) of 4.62%, whereas thermally annealed devices showed a PCE of 3.94%. After the aging process, which involved thermal stress and exposure to air, thermally annealed and mix-PCBM devices retained a PCE of 3%, whereas solvent-annealed devices had a much lower PCE of 1.7%. Therefore, our results show that in the long-term stability perspective, thermal annealing is better than solvent annealing, and mix-PCBM is better than PC61BM in the case of DPP(TBFu)(2). We fabricated small-molecule inverted organic solar cells that retain their performance in air for 3 weeks without encapsulation. (C) 2016 Elsevier B.V. All rights reserved.