CN111100262A - 钙钛矿太阳能电池用一种电子传输材料 - Google Patents

钙钛矿太阳能电池用一种电子传输材料 Download PDF

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CN111100262A
CN111100262A CN201911209591.2A CN201911209591A CN111100262A CN 111100262 A CN111100262 A CN 111100262A CN 201911209591 A CN201911209591 A CN 201911209591A CN 111100262 A CN111100262 A CN 111100262A
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Abstract

本发明的目的是提供一种阴离子共轭聚电解质，可溶于水、乙醇等极性溶剂，通过溶液法成膜；与无机氧化物相比较，该材料的薄膜具有较大的疏水性，促进高质量钙钛矿膜的形成。具有电子传输性能，作为电子传输材料，用于n‑i‑p钙钛矿太阳能电池中；展示出在钙钛矿太阳能电池、有机太阳能电池、有机发光二极管中潜在而广泛的应用前景。

Description

钙钛矿太阳能电池用一种电子传输材料
技术领域
本发明涉及一种阴离子共轭聚电解质，作为电子传输材料应用在钙钛矿太阳能电池中。
背景技术
钙钛矿太阳能电池发展非常迅速，2013年被Science评为国际十大科技进展之一，单结电池光电转换效率高达23.7%。钙钛矿太阳能电池具有三明治结构，由双电极（正极与负极）、载流子传输层（电子传输层、空穴传输层）、光活性层构成。其性能取决于器件结构、材料本身及功能层之间的界面性能；电池工作原理是，在太阳光照射下，光活性层产生激子，在内建电场的作用下，激子分离成电子与空穴载流子，它们分别经电子传输层与空穴传输层迁移到负极与正极，在外电路上形成回路；开发高性能的功能材料非常重要。
发明内容
本发明的目的是将一种阴离子共轭聚电解质作为电子传输材料应用在n-i-p钙钛矿太阳能电池中。
本发明的特征是将一种阴离子共轭聚电解质作为电子传输材料应用于n-i-p钙钛矿太阳能电池中，该阴离子共轭聚电解质（缩写为PFS）结构通式如下式所示，
Figure 524517DEST_PATH_IMAGE001
。
附图说明
结合如下附图及详细描述将会更清楚地理解本发明的上述特征及优点，其中：
图1薄膜水接触角测试；
图2钙钛矿太阳能电池的结构示意图；
图3钙钛矿太阳能电池电流密度/电压（J sc /V oc ）曲线图。
具体实施方案
实施案例：
下面对本发明的优选实施案例进行详细阐述，以使本发明的优点和特征能更易于被本领域技术人员理解。
PFS材料的化学合成路线：
Figure 972816DEST_PATH_IMAGE002
。
PFS材料的性能表征：
PFS能溶解在极性溶剂中，其溶液可用旋涂法成膜；薄膜质量好、均匀。
膜疏水性表征：将水滴滴到薄膜上面，测得水接触角为97°（见图1），而SnO2膜的接触角为9°。PFS薄膜大的接触角，表明疏水性较强，可显著提高钙钛矿CH3NH3PbI3膜的结晶性。
钙钛矿太阳能电池的制备与表征：
（1）1.5 cm x 1.5 cm的ITO基片在去离子水中超声两遍，然后在丙酮和异丙醇中各超声一遍，用氮气枪吹干，放入紫外−臭氧仪器中处理10-20 min。
（2）电池ITO/PFS/CH3NH3PbI3/Spiro-OMeTAD/Au的制备：
先在ITO基片上用旋涂法制备电子传输材料PFS薄膜，加热退火10-30 min；再把配制好的PbI2、MAI和DMSO的DMF的混合溶液旋涂到样品ITO/PFS上面，在100-130 ℃的条件下退火10-30 min；再旋涂空穴传输材料Spiro-OMeTAD薄膜；最后用真空蒸镀方法获得Au电极。
（3）电池性能测试：
使用Keithley2400对器件进行性能测试：在模拟的AM 1.5G的太阳光照射条件下（光强度为100 mW/cm2）可获得光电流密度/电压曲线，扫描速率50 mV/S。
将电池ITO/PFS/CH3NH3PbI3/Spiro-OMeTAD/Au加电压进行扫描，收集数据。获得开路电压（V oc ）为0.99 V、短路电流密度为（J sc ）为23.75 mA cm-2，填充因子（FF）为56.58%、光电转化效率为13.4%。

Claims (2)

1.一种阴离子共轭聚电解质，其特征在于：这种阴离子共轭聚电解质用作电子传输材料；这种材料的化学结构式如下：
Figure 63223DEST_PATH_IMAGE001
。
2.根据权利要求1所述的一种阴离子共轭聚电解质，其特征在于：所述阴离子共轭聚电解质作为电子传输材料用于n-i-p钙钛矿太阳能电池中，方法包括：
在处理好的ITO基片上用旋涂法制备电子传输材料的薄膜，加热退火10-30 min；再把配制好的碘化铅（PbI2）、碘甲胺（MAI）和二甲亚砜（DMSO）的N,N-二甲基甲酰胺（DMF）的混合溶液旋涂到该薄膜的上面，在100-130 ℃的条件下退火10-30 min；再旋涂空穴传输材料Spiro-OMeTAD薄膜；最后用真空蒸镀方法获得Au电极。
CN201911209591.2A 2019-12-01 2019-12-01 钙钛矿太阳能电池用一种电子传输材料 Withdrawn CN111100262A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112018244A (zh) * 2020-07-23 2020-12-01 隆基绿能科技股份有限公司 一种钙钛矿电池及制备方法
CN112071986A (zh) * 2020-08-19 2020-12-11 南京工业大学 带有磺酸根的阴离子共轭聚电解质材料在钙钛矿太阳能电池中的应用

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112018244A (zh) * 2020-07-23 2020-12-01 隆基绿能科技股份有限公司 一种钙钛矿电池及制备方法
CN112071986A (zh) * 2020-08-19 2020-12-11 南京工业大学 带有磺酸根的阴离子共轭聚电解质材料在钙钛矿太阳能电池中的应用
CN112071986B (zh) * 2020-08-19 2022-12-20 南京工业大学 带有磺酸根的阴离子共轭聚电解质材料在钙钛矿太阳能电池中的应用

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