{"title":"Enhanced photon trapping in perovskite solar cells via grating structures.","authors":"Chang Liu, Da Yin, Yi-Fan Wang, Su-Heng Li, Yue-Feng Liu, Jing Feng","doi":"10.1364/OL.564964","DOIUrl":null,"url":null,"abstract":"<p><p>Insufficient light absorption and weak environmental stability are important issues that hinder the development of perovskite solar cells (PSCs). This Letter reports a structurally engineered photon management strategy utilizing a corrugated electron transport layer for enhanced photon trapping in PSCs. The synergistic interplay of grating-induced scattering and diffraction effects leads to a broadband absorption enhancement spanning 300-800 nm in the perovskite layer. When the period of the grating structure is 1.5 μm, the absorption of the perovskite layer reaches its maximum value, and the J<sub>SC</sub> of the PSC is increased from 23.00 mA/cm<sup>2</sup> of the flat device to 24.97 mA/cm<sup>2</sup>. Moreover, due to the hydrophobic effect of the grating structure, the humidity stability of the PSCs has also been improved. After being stored in nitrogen at 30% relative humidity (RH) and 20°C for 120 h, the PCE drops to 89.8% of the initial value.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4474-4477"},"PeriodicalIF":3.1000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics letters","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1364/OL.564964","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Insufficient light absorption and weak environmental stability are important issues that hinder the development of perovskite solar cells (PSCs). This Letter reports a structurally engineered photon management strategy utilizing a corrugated electron transport layer for enhanced photon trapping in PSCs. The synergistic interplay of grating-induced scattering and diffraction effects leads to a broadband absorption enhancement spanning 300-800 nm in the perovskite layer. When the period of the grating structure is 1.5 μm, the absorption of the perovskite layer reaches its maximum value, and the JSC of the PSC is increased from 23.00 mA/cm2 of the flat device to 24.97 mA/cm2. Moreover, due to the hydrophobic effect of the grating structure, the humidity stability of the PSCs has also been improved. After being stored in nitrogen at 30% relative humidity (RH) and 20°C for 120 h, the PCE drops to 89.8% of the initial value.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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