{"title":"通过设计薄膜太阳能电池中的核壳结构介孔碳球反电极实现背界面工程","authors":"Chang Xu, Yujie Gao, Tiansen Li, Jianing Guo, Mingxing Wu","doi":"10.1016/j.jpowsour.2024.235877","DOIUrl":null,"url":null,"abstract":"<div><div>Exploration of economical and highly effective counter electrodes is crucial for both fundamental research into and the commercial application of dye-sensitized solar cells (DSCs) and perovskite solar cells (PSCs). Herein, a new type of core–shell structured mesoporous carbon spheres (Ag@MCSs) was meticulously designed and synthesized as a low-cost counter electrode to optimize back interface. The tailored mesoporous core–shell structure and metal nanoparticle core can optimize the energy level alignment and improve the conductivity of the counter electrode. These improvements facilitate charge carrier extraction and transport processes and inhibit recombination at the back interface of the counter electrode/perovskite. The hole transport layer–free PSCs using Ag@MCSs counter electrode obtains a power conversion efficiency (PCE) of 12.36 %, surpassing the parallel PSCs based on smooth surface carbon spheres (SSCSs) and micro/mesoporous carbon spheres (MMCSs) counter electrodes. Additionally, Ag@MCSs provide numerous catalytically active sites, smooth mass transfer channels, and improved conductivity, resulting in superior catalytic activity for iodide redox couple regeneration in DSCs, generating a high PCE of 8.25 %. This study is expected to offer a feasible pathway for exploring cheap counter electrodes and back interface engineering to accelerate mass and carrier transport processes in the back interface of PSCs and DSCs.</div></div>","PeriodicalId":377,"journal":{"name":"Journal of Power Sources","volume":"628 ","pages":"Article 235877"},"PeriodicalIF":8.1000,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Back interface engineering by designing core–shell structured mesoporous carbon spheres counter electrode in thin–film solar cells\",\"authors\":\"Chang Xu, Yujie Gao, Tiansen Li, Jianing Guo, Mingxing Wu\",\"doi\":\"10.1016/j.jpowsour.2024.235877\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Exploration of economical and highly effective counter electrodes is crucial for both fundamental research into and the commercial application of dye-sensitized solar cells (DSCs) and perovskite solar cells (PSCs). Herein, a new type of core–shell structured mesoporous carbon spheres (Ag@MCSs) was meticulously designed and synthesized as a low-cost counter electrode to optimize back interface. The tailored mesoporous core–shell structure and metal nanoparticle core can optimize the energy level alignment and improve the conductivity of the counter electrode. These improvements facilitate charge carrier extraction and transport processes and inhibit recombination at the back interface of the counter electrode/perovskite. The hole transport layer–free PSCs using Ag@MCSs counter electrode obtains a power conversion efficiency (PCE) of 12.36 %, surpassing the parallel PSCs based on smooth surface carbon spheres (SSCSs) and micro/mesoporous carbon spheres (MMCSs) counter electrodes. Additionally, Ag@MCSs provide numerous catalytically active sites, smooth mass transfer channels, and improved conductivity, resulting in superior catalytic activity for iodide redox couple regeneration in DSCs, generating a high PCE of 8.25 %. This study is expected to offer a feasible pathway for exploring cheap counter electrodes and back interface engineering to accelerate mass and carrier transport processes in the back interface of PSCs and DSCs.</div></div>\",\"PeriodicalId\":377,\"journal\":{\"name\":\"Journal of Power Sources\",\"volume\":\"628 \",\"pages\":\"Article 235877\"},\"PeriodicalIF\":8.1000,\"publicationDate\":\"2024-11-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Power Sources\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0378775324018299\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Power Sources","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378775324018299","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Back interface engineering by designing core–shell structured mesoporous carbon spheres counter electrode in thin–film solar cells
Exploration of economical and highly effective counter electrodes is crucial for both fundamental research into and the commercial application of dye-sensitized solar cells (DSCs) and perovskite solar cells (PSCs). Herein, a new type of core–shell structured mesoporous carbon spheres (Ag@MCSs) was meticulously designed and synthesized as a low-cost counter electrode to optimize back interface. The tailored mesoporous core–shell structure and metal nanoparticle core can optimize the energy level alignment and improve the conductivity of the counter electrode. These improvements facilitate charge carrier extraction and transport processes and inhibit recombination at the back interface of the counter electrode/perovskite. The hole transport layer–free PSCs using Ag@MCSs counter electrode obtains a power conversion efficiency (PCE) of 12.36 %, surpassing the parallel PSCs based on smooth surface carbon spheres (SSCSs) and micro/mesoporous carbon spheres (MMCSs) counter electrodes. Additionally, Ag@MCSs provide numerous catalytically active sites, smooth mass transfer channels, and improved conductivity, resulting in superior catalytic activity for iodide redox couple regeneration in DSCs, generating a high PCE of 8.25 %. This study is expected to offer a feasible pathway for exploring cheap counter electrodes and back interface engineering to accelerate mass and carrier transport processes in the back interface of PSCs and DSCs.
期刊介绍:
The Journal of Power Sources is a publication catering to researchers and technologists interested in various aspects of the science, technology, and applications of electrochemical power sources. It covers original research and reviews on primary and secondary batteries, fuel cells, supercapacitors, and photo-electrochemical cells.
Topics considered include the research, development and applications of nanomaterials and novel componentry for these devices. Examples of applications of these electrochemical power sources include:
• Portable electronics
• Electric and Hybrid Electric Vehicles
• Uninterruptible Power Supply (UPS) systems
• Storage of renewable energy
• Satellites and deep space probes
• Boats and ships, drones and aircrafts
• Wearable energy storage systems