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276601822木虫 (正式写手)
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[求助]
为什么IPCE曲线和UV吸收不能很好的match 已有1人参与
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碰到一个难题，向大家请教！小弟是做聚合物太能电池（OPV）的。我们合成了两条polymer，IPCE和吸收的图见附件。其中一条的IPCE和吸收看上去很吻合，另外一个差别比较大！文章投出去后，审稿人问为什么IPCE曲线和UV吸收不能很好的match？？ 第一次的意见： The IPCE spectrum of PSiNO is well matched with the absorption spectrum. However, the IPCE spectrum of PSiBO looks not matched with the absorption spectrum. Obviously, the polymer peaks shown in 600 nm ~ 700 nm range are quite dominant in the absorption spectrum of 1:1 PSiBO: PC71BM film (Fig S8 (b)). However, the polymer peaks shown in 600 nm ~ 700 nm range are significantly suppressed in IPCE spectrum. 我们的回答： The Incident photon-to-current efficiency (IPCE) is defined as the ratio of the number of charge carriers collected by the solar cell to the number of photons of a given energy shining on the solar cell from incident photons. IPCE is a measurement of a device's electrical sensitivity to light. Thus, IPCE is often measured over a range of different wavelengths to characterize a device's efficiency at each photon energy level. In the optimized 1:1 PSiBO: PC71BM device, the IPCE spectra in 600 nm~700 nm range slightly contribute poorer incident-photon-to-converted-electron ratio. Nevertheless, the integrated Jsc value from the IPCE spectra is 10.40 mA cm-2 for PSiBO device. The Jsc value calculated from integration of the IPCE spectra is within 5% error, which conforms well to that obtained from the J–V measurement, supporting the reliability of the photovoltaic measurement. 但是审稿人对我们的回答并不买账，下面是刚刚回来的意见：In revise version, I think authors have successfully eliminated my concern. However, one thing still remains with respect to the IPCE data. Yes. It is obvious that the suppressed IPCE spectrum was because of poorer incident-photon-to-converted-electron ratio. However, my question was WHY? Why the incident-photon-to-converted-electron ratio became poorer in PSiBO: PC71BM system? If authors can explain this point clearly, this manuscript will be shown in the ，，， 恳请指导，谢谢！  IPCE.jpg  UV absortion.jpg |
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木虫 (著名写手)
- 应助: 29 (小学生)
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感谢参与，应助指数 +1
276601822: 金币+10, ★★★很有帮助, 谢谢您的指导！ 2014-12-06 00:28:28
276601822: 金币+50, ★★★★★最佳答案, 采纳了您的意见，顺利接受了，谢谢！ 2014-12-18 00:32:50
感谢参与，应助指数 +1
276601822: 金币+10, ★★★很有帮助, 谢谢您的指导！ 2014-12-06 00:28:28
276601822: 金币+50, ★★★★★最佳答案, 采纳了您的意见，顺利接受了，谢谢！ 2014-12-18 00:32:50
| 这个跟很多因素有关系。例如聚合物结晶差，微观精细结构被打扰，界面电荷收集效率，界面缺陷密度提高等等，很难解释具体是什么原因。这个审稿人一看就是个外行，没有真正懂得OPV这个领域。吸收测试跟薄膜厚度有很大关系，所以吸收峰强度和IPCE峰强度没太大的关系。IPCE只要和吸收范围匹配就行了，审稿人追着这种小细节不放，说明不是内行。楼主就列出一些可能的影响因素。引用两篇文献就行了。 |
2楼2014-12-05 23:37:40
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