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276601822

木蟲 (正式寫手)

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[求助] 為什么IPCE曲線和UV吸收不能很好的match 已有1人參與

碰到一個(gè)難題，向大家請教！小弟是做聚合物太能電池（OPV）的。我們合成了兩條polymer，IPCE和吸收的圖見附件。其中一條的IPCE和吸收看上去很吻合，另外一個(gè)差別比較大！文章投出去后，審稿人問為什么IPCE曲線和UV吸收不能很好的match？？

第一次的意見：
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.

我們的回答：
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.

但是審稿人對我們的回答并不買賬，下面是剛剛回來的意見：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 ，，，

懇請指導(dǎo)，謝謝！

IPCE.jpg

UV absortion.jpg

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zehuac

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【答案】應(yīng)助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
感謝參與，應(yīng)助指數(shù) +1
276601822: 金幣+10, ★★★很有幫助, 謝謝您的指導(dǎo)！ 2014-12-06 00:28:28
276601822: 金幣+50, ★★★★★最佳答案, 采納了您的意見，順利接受了，謝謝！ 2014-12-18 00:32:50

這個(gè)跟很多因素有關(guān)系。例如聚合物結(jié)晶差，微觀精細(xì)結(jié)構(gòu)被打擾，界面電荷收集效率，界面缺陷密度提高等等，很難解釋具體是什么原因。這個(gè)審稿人一看就是個(gè)外行，沒有真正懂得OPV這個(gè)領(lǐng)域。吸收測試跟薄膜厚度有很大關(guān)系，所以吸收峰強(qiáng)度和IPCE峰強(qiáng)度沒太大的關(guān)系。IPCE只要和吸收范圍匹配就行了，審稿人追著這種小細(xì)節(jié)不放，說明不是內(nèi)行。樓主就列出一些可能的影響因素。引用兩篇文獻(xiàn)就行了。

贊一下(5人)

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努力就有收獲

2樓2014-12-05 23:37:40