Khan, DanishSajid, SajidKhan, SulimanPark, JongeeUllah, IhsanMetallurgical and Materials Engineering2024-07-052024-07-0520220038-092X1471-125710.1016/j.solener.2022.04.0342-s2.0-85128557842https://doi.org/10.1016/j.solener.2022.04.034https://hdl.handle.net/20.500.14411/1771Khan, Suliman/0000-0003-0069-4025; Sajid, Sajid/0000-0002-1165-1365; Park, Jongee/0000-0003-1415-6906; Khan, Danish/0000-0002-6754-9757Perovskite solar cells (PSCs) with no charge transport layers (CTLs) could be one of the major device architectures for the production of simple and low-cost devices. However, CTLs-free PSCs based on n-p homojunction have yet to show high power conversion efficiency (PCE), which is most likely due to inadequate light-and charge-management in the p-type perovskite. The device operation is examined using Solar Cell Capacitance Simulator (SCAPS)-software, and a novel n-p homojunction design is proposed to attempt efficient CTLs-free PSCs. Several aspects of p-type layer that can affect device performance, such as acceptor density, photon harvesting capability, defects density, and resistances to the transport of charge-carriers are scrutinized and adjusted. Furthermore, the effects of different work-functions of metal electrodes are examined. A suitable acceptor concentration is required for oriented charge transport. It is determined that a p-type perovskite with a thickness of 0.3 mu m is advantageous for high performance. A metal electrode with a high work-function is essential for efficient device. Consequently, a PCE of 15.60% is obtained with an optimal defect density of E15 cm(-3), indicating that n-p homojunction-based CTLs-free PSCs are promising since they simplify the device design and fabrication process while retaining an acceptable PCE.eninfo:eu-repo/semantics/closedAccessAcceptor densityDefect densityThicknessWork functionP-type absorberCTLs-free PSCArticleQ2Q12386977WOS:00079658160000313