Affiliation:
1. Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic, Modules National Central University Taoyuan 32001 Taiwan
2. Department of Applied Chemistry and Institute of Molecular Science National Yang Ming Chiao Tung University 1001 Ta‐Hseuh Rd. Hsinchu 300093 Taiwan
3. Center for Emergent Functional Matter Science National Yang Ming Chiao Tung University 1001 Ta‐Hseuh Rd. Hsinchu 300093 Taiwan
4. Department of Chemical and Materials Engineering Photo‐sensitive Material Advanced Research and Technology Center (Photo‐SMART) National Kaohsiung University of Science and Technology Kaohsiung 80778 Taiwan
Abstract
AbstractFour X‐shaped quinoxaline‐based organic dyes, PQx (1), TQx, (2), PQxD (3), and TQxD (4) (D = dye sensitizers) are developed and served as p‐type self‐assemble monolayer (SAM) for tin perovskite solar cells (TPSC). Thermal, optical, and electrochemical properties of these SAMs are thoroughly investigated and characterized. Tin perovskite layers are successfully deposited on these four SAM surfaces according to a two‐step approach and the devices exhibit power conversion efficiency in the order of TQxD (8.3%) > TQx (8.0%) > PQxD (7.1%) > PQx (6.1%). With thiophene π‐extended conjugation unit in SAM structure, TQxD (4) exhibits the highest hole extraction rates, greatest hole mobilities, and slowest charge recombination to achieve great device performance of 8.3%, which is the current best result for SAM‐based TPSC ever reported. Furthermore, all devices except PQx shows great enduring stability for the performance retaining ≈90% of their original values for shelf storage over 1600 h.
Funder
Ministry of Science and Technology, Taiwan
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
32 articles.
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