Perovskite Solar Cells Prepared by Two-step Solution Method with Additive

ZHENG Hai-song; WEI Ai-xiang; LIU Jun; XIAO Zhi-ming; ZHAO Yu

doi:10.3788/fgxb20194006.0766

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Perovskite Solar Cells Prepared by Two-step Solution Method with Additive

Device Fabrication and Physics | 更新时间：2020-08-12

- Perovskite Solar Cells Prepared by Two-step Solution Method with Additive
- Chinese Journal of Luminescence Vol. 40, Issue 6, Pages: 766-772(2019)
- 作者机构：
  
  广东工业大学材料与能源学院, 广东广州 510006
- 作者简介：
- 基金信息：
  
  Supported by Science and Technology Program of Guangdong Province(2016A010104020)
- DOI：10.3788/fgxb20194006.0766
  CLC： TM914.4
- Received：23 June 2018，
  
  Revised：18 October 2018，
  
  Published Online：31 October 2018，
  
  Published：05 June 2019
- 稿件说明：
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郑海松, 魏爱香, 刘俊等. 含添加剂的二步溶液法制备钙钛矿太阳能电池[J]. 发光学报, 2019,40(6): 766-772

ZHENG Hai-song, WEI Ai-xiang, LIU Jun etc. Perovskite Solar Cells Prepared by Two-step Solution Method with Additive[J]. Chinese Journal of Luminescence, 2019,40(6): 766-772
郑海松, 魏爱香, 刘俊等. 含添加剂的二步溶液法制备钙钛矿太阳能电池[J]. 发光学报, 2019,40(6): 766-772 DOI： 10.3788/fgxb20194006.0766.

ZHENG Hai-song, WEI Ai-xiang, LIU Jun etc. Perovskite Solar Cells Prepared by Two-step Solution Method with Additive[J]. Chinese Journal of Luminescence, 2019,40(6): 766-772 DOI： 10.3788/fgxb20194006.0766.

摘要

采用含二甲基亚砜（DMSO）添加剂的二步溶液法制备高质量CH

PbI

吸收层，并制备了结构为FTO/TiO

致密层/TiO

介孔层/CH

PbI

吸收层/碳电极的碳基无空穴传输层的钙钛矿太阳能电池（PSCs）。研究了PbI

薄膜分别在相同浓度的MAI/IPA溶液中浸泡不同时间，以及在不同浓度的MAI/IPA溶液中浸泡相同时间对CH

PbI

薄膜的形貌、结构以及对PSCs光伏性能的影响规律。结果表明，在PbI

/DMF溶液中添加DMSO之后使制备的PbI

薄膜呈多孔疏松状态，有利于MAI/IPA溶液渗入PbI

薄膜内部，缩短PbI

完全转换成CH

PbI

的时间；当浸泡时间为40 min时，电池的光伏性能最佳，其开路电压为0.82 V，短路电流密度为21.21 mA/cm

，填充因子为0.49，光电转化效率为8.61%。但是当浸泡时间过长，CH

PbI

薄膜表面会出现大晶粒，导致电池的光伏性能变差。而在相同的浸泡时间下，MAI/IPA溶液的浓度则会显著影响PbI

转化成CH

PbI

的速度，MAI/IPA溶液的浓度越高，PbI

完全转化成CH

PbI

的速度越快。

Abstract

In this paper

a two-step solution method including dimethyl sulfoxide(DMSO) as additive is used to prepare a high-quality CH

PbI

absorb layer for carbon-based hole conductor-free perovskite solar cells(PSCs)

which have the structure consisting of FTO glass/compact TiO

/mesoporous TiO

/CH

PbI

/carbon electrodes. The effects of dipping time and dipping concentration on the photovoltaic performance of PSCs are studied. Introducing some DMSO in the PbI

/DMF solutions results in formation of porous and loose PbI

films

which shortens the time required for the complete conversion of PbI

to perovskite. When the dipping time is 40 min

the PSCs have the best photovoltaic performance with the open circuit voltage of 0.82 V

the short-circuit current density of 21.21 mA/cm

the fill factor of 0.49

and the photoelectric conversion efficiency of 8.61%. However

when the dipping time is too long

the large grains will appear on the surface of the CH

PbI

absorb layer

resulting in the poor photovoltaic performance of PSCs. In addition

the concentration of MAI/IPA solution will significantly affect the rate of the conversion of PbI

to CH

PbI

. The higher the concentration of MAI/IPA solution is

the faster the rate of the conversion of PbI

to CH

PbI

is.

关键词

Keywords

references

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