首页|BaSnO3电子传输层在量子点太阳能电池中的应用

BaSnO3电子传输层在量子点太阳能电池中的应用

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电子传输层作为新型薄膜太阳电池重要组成部分承担光生电子的传输角色.研究通过简单共沉淀法合成尺寸分布较好的三元BaSnO3(简称BSO)纳米晶,考察了不同热处理温度对BSO相形成影响规律,XRD测试结果表明:升高温度有利于降低纳米晶中碳酸钡等杂质含量,提高BSO纳米晶相纯度.将合成的BSO纳米晶首次作为电子传输层材料应用于PbS胶体量子点太阳能电池中,在1200 ℃(2 h)条件下合成的BSO纳米晶对应器件性能优于商业TiO2纳米晶对照组,这主要得益于BSO/PbS量子点界面电荷的高效萃取和低复合.对应同批次最佳器件的性能为:Jsc=25.199 mA·cm-2、Voc=0.480 V、FF=0.534及PCE=6.454％,且表现出良好的工作稳定性.该工作证实BaSnO3纳米材料可作为量子点太阳电池电子传输材料使用,为今后进一步提升同类型器件的性能提供参考.
BaSnO3 Electron-transporting Layer for Quantum Dots Solar Cells
Electronic transport layer plays a crucial role as a key component in emerging thin-film solar cells for the transportation of photo-generated electrons.In this study,we employed a simple co-precipitation method to synthesize well-sized BaSnO3(referred to as BSO)ternary nanocrystals.The impact of annealing temperature on the formation of BSO was studied.X-ray diffraction(XRD)results indicate that elevated temperatures are beneficial for reducing impurities,such as barium carbonate in BSO,thereby enhancing the phase purity of BSO nanocrystals.The synthesized BSO nanocrystals were applied as electron transport layer in PbS colloidal quantum dot solar cells.Performance of the devices with BSO synthesized at 1200 ℃ for 2 h surpassed that of the commercial TiO2 nanocrystal.This improvement is mainly attributed to the efficient extraction of charges at the BSO/PbS quantum dot interface and low recombination at internal interfaces within the device.The optimal device exhibited the following characteristics:Jsc=25.199 mA·cm-2,Voc=0.480 V,FF=0.534 and PCE=6.454％,demonstrating excellent operational stability.It is confirmed for the first time that BaSnO3 nanomaterials can be utilized as electron transport materials for quantum dot solar cells,providing theoretical and practical guidance for further advancements in the performance of similar devices in the future.

BnSnO3electron transporting layerquantum dotssolar cellsefficiency

石宇星、江德华、汪丽婧、李世杰、郭章旺、赵骏、何东祥、叶滨、曾涛、施玮、陈云霞、苏小丽、董罡

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景德镇陶瓷大学,江西景德镇 333403

景德镇市环境陶瓷材料重点实验室,江西景德镇 333001

BaSnO3 电子传输层 量子点 太阳能电池 效率

江西省科技厅科技国合项目江西省科技厅重点研发项目国家自然科学基金景德镇市环境陶瓷材料重点实验室项目江西省教育厅项目景德镇市科技局项目大学生创新创业项目

20212BDH8000520212BBE510205186201720192PTJS002GJJ2201007/GJJ220104520202GYZD013-10/20224GY008-19S202310408013/X202210408019

2024

10.13957/j.cnki.tcxb.2024.03.007

陶瓷学报
景德镇陶瓷学院

陶瓷学报

CSTPCD北大核心
影响因子：0.7
ISSN：1000-2278
年,卷(期)：2024.45(3)