CuCrO2/WO3透明pn结通过高熵钙钛矿Ba(Ti0.2Zr0.2Sn0.2Hf0.2Ce0.2)O3过渡层增强光伏响应和稳定性

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2024-12-23 DOI:10.1063/5.0247786

Chengyu Jia, Bo He, Rui Wang, Dingwei Wang, Jun Cao, Lei Shi, Jiaqi Pan, Zhiguo Zhao, Chaorong Li

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引用次数: 0

摘要

采用溶胶-凝胶-水热退火法制备了CuCrO2/Ba(Ti0.2Zr0.2Sn0.2Hf0.2Ce0.2)O3/WO3透明pn结。CuCrO2/BaTiZrSnHfCe/WO3的透过率为~ 83%-88%，与本器件（光伏转换效率（PCE）为~ 1.22%）相比，光电增强了~ 4.0 × 103倍，并且在5个月内也表现出良好的稳定性。这主要归因于BaTiZrSnHfCe HEO固溶体。除了适当的费米能级和高QY外，BaTiZrSnHfCe HEO通过高熵晶格畸变和电荷补偿的协同作用诱导/注入/驱动载流子，可以改善动力学平衡，实现pce透明，同时通过Cu空位/间隙氧增加空穴。此外，无机CuCrO2、BaTiZrSnHfCe HEO和WO3保持了良好的结构稳定性，表明CuCrO2/BaTiZrSnHfCe/WO3在光电器件中的应用前景广阔。

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Transparent pn junction in CuCrO2/WO3 for enhanced photovoltaic response and stability via high entropy perovskite Ba(Ti0.2Zr0.2Sn0.2Hf0.2Ce0.2)O3 transition layer

A transparent pn junction comprising CuCrO2/Ba(Ti0.2Zr0.2Sn0.2Hf0.2Ce0.2)O3/WO3 was synthesized using a sol-gel-hydrothermal-annealing method. The CuCrO2/BaTiZrSnHfCe/WO3 achieves a transmittance of ∼83%–88%, with photovoltaic enhancement of ∼4.0 × 103-folds compared to the intrinsic device [photovoltaic conversion efficiency (PCE) of ∼1.22%], and it also demonstrates good stability over 5 months. This is mainly attributed to the BaTiZrSnHfCe HEO solid solution. In addition to an appropriate Fermi level/high QY, the BaTiZrSnHfCe HEO, with carrier inducing/injecting/driving by synergism of high entropy lattice distortion and charge compensation, can improve kinetic equilibrium for achieving PCE-transparency while increasing holes via Cu vacancies/interstitial oxygen. Moreover, inorganic CuCrO2, BaTiZrSnHfCe HEO, and WO3 maintain good structural stability, indicating promising applications for CuCrO2/BaTiZrSnHfCe/WO3 in optoelectronic devices.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.