An investigation of hole transport layers and electron transport layers to produce highly efficient K2TiI6-based perovskite solar cells

被引：0

作者：

M. Khalid Hossain ^{[1
]}

Kazi Md Sadat ^{[2
]}

M. Shihab Uddin ^{[3
]}

Apon Kumar Datta ^{[4
]}

Prakash Kanjariya ^{[5
]}

M. Sudhakara Reddy ^{[3
]}

Rishiv Kalia ^{[6
]}

Barani Selvaraj ^{[7
]}

Aboud Ahmed Awadh Bahajjaj ^{[8
]}

R. Balachandran ^{[9
]}

Ali Hajjiah ^{[10
]}

Rajesh Haldhar ^{[11
]}

机构：

[1] Bangladesh Atomic Energy Commission,Institute of Electronics, Atomic Energy Research Establishment

[2] Kyushu University,Department of Advanced Energy Engineering Science, Interdisciplinary Graduate School of Engineering Sciences

[3] Mymensingh Engineering College,Department of Electrical and Electronic Engineering

[4] CCN University of Science and Technology,Department of Electrical and Electronic Engineering

[5] Islamic University,Department of Electrical and Electronic Engineering

[6] Marwadi University,Marwadi University Research Center, Department of Physics, Faculty of Science

[7] JAIN (Deemed to be University),Department of Physics & Electronics, School of Sciences

[8] Chitkara University,Centre for Research Impact & Outcome, Chitkara University Institute of Engineering and Technology

[9] Sathyabama Institute of Science and Technology,Department of Electronics and Communication Engineering

[10] King Saud University,Department of Chemistry, College of Science

[11] Adama Science and Technology University,Department of ECE, College of Electrical Engineering and Computing

[12] Kuwait University,Department of Electrical Engineering, College of Engineering and Petroleum

[13] Yeungnam University,School of Chemical Engineering

来源：

Scientific Reports | / 15卷 / 1期

关键词：

Lead-free perovskite; Perovskite solar cell; K; TiI; absorber; D-PBTTT-14 HTL; CdZnS ETL; SCAPS-1D;

D O I：

10.1038/s41598-025-98351-y

中图分类号：

学科分类号：

摘要：

In this theoretical study, potential K2TiI6 perovskite material has been used as the absorber layer of the investigated perovskite solar cells (PSCs). The SCAPS-1D program was used to conduct the numerical analysis where 10 different hole transport layers (HTLs) and 4 electron transport layers (ETLs) were used to find the best optimum device structure. While various HTLs were studied, D-PBTTT-14 showed the best-optimized performance and therefore it was chosen as the final HTL material for further studies in combination with 4 ETL materials. Different device parameters such as the thickness of the absorber, HTL, and ETL layers; doping concentrations, and defect densities are varied in this work to optimize the investigated device structures. Moreover, the effect of temperature, series and shunt resistance, J-V curve, Q-E curve, recombination and generation rates were explored in this study. After optimizing various device parameters, the device with CdZnS ETL demonstrated superior performance compared to other ETL devices. It achieved a power conversion efficiency (PCE) of 26.21%, fill factor (FF) of 88.06%, short-circuit current density (Jsc) of 20.951 mA/cm², and an open-circuit voltage (VOC) of 1.4205 V. Under fully optimized conditions, LBSO, Nb2O5, and PC60BM ETL devices showed PCE of 22.06%, 23.24%, and 23.12%, respectively. Based on the findings of this study, it can be stated that this work could be valuable for the practical implementation of K2TiI6 absorber-based PSCs.

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