Self-powered photodetector based on Sb2Se3 vertical nanorod grass

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-03-10 DOI:10.1016/j.matlet.2025.138342

Shengyang Meng, Long Li, Jinxin Bian, Lu Chen, Jiayi Shen, Weiyan Zhu, Jiaming Zhu, Fan Wu

{"title":"Self-powered photodetector based on Sb2Se3 vertical nanorod grass","authors":"Shengyang Meng, Long Li, Jinxin Bian, Lu Chen, Jiayi Shen, Weiyan Zhu, Jiaming Zhu, Fan Wu","doi":"10.1016/j.matlet.2025.138342","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the morphology and performance of Sb2Se3 nanostructures on TiO2 layers, comparing the compact TiO2 (c-TiO2) and mesoporous TiO2 (m-TiO2) layers. Sb2Se3 nanorods on c-TiO2 are horizontally oriented, whereas vertical grass-like nanostructures form on m-TiO2. The vertical alignment enhances electron transport, reducing recombination compared to the disordered nanorods. Notably, the photocurrent of Sb2Se3 nanorods on m-TiO2 increased by nearly one order of magnitude compared to Sb2Se3 nanorods on c-TiO2 layers. To further improve photocurrent, hole transport layers of P3HT and Spiro-OMeTAD were introduced. Cross-sectional SEM images show that Spiro-OMeTAD infiltrates the voids between nanorods more effectively than P3HT, leading to better hole extraction and increased photocurrent for self-powered photodetector. These findings highlight the importance of oriented growth of Sb2Se3 and hole transport materials in enhancing charge collection efficiency.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"389 ","pages":"Article 138342"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25003714","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the morphology and performance of Sb₂Se₃ nanostructures on TiO₂ layers, comparing the compact TiO₂ (c-TiO₂) and mesoporous TiO₂ (m-TiO₂) layers. Sb₂Se₃ nanorods on c-TiO₂ are horizontally oriented, whereas vertical grass-like nanostructures form on m-TiO₂. The vertical alignment enhances electron transport, reducing recombination compared to the disordered nanorods. Notably, the photocurrent of Sb₂Se₃ nanorods on m-TiO₂ increased by nearly one order of magnitude compared to Sb₂Se₃ nanorods on c-TiO₂ layers. To further improve photocurrent, hole transport layers of P3HT and Spiro-OMeTAD were introduced. Cross-sectional SEM images show that Spiro-OMeTAD infiltrates the voids between nanorods more effectively than P3HT, leading to better hole extraction and increased photocurrent for self-powered photodetector. These findings highlight the importance of oriented growth of Sb₂Se₃ and hole transport materials in enhancing charge collection efficiency.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive