Solution-Free Melt-Grown CsGeI3 Polycrystals for Lead-Free Perovskite Photovoltaics: Synthesis, Characterization, and Theoretical Insights

被引:1
作者
Panjikaran, Mariot Jose [1 ]
Pramitha, A. [1 ]
Mishra, Vikash [1 ]
Hegde, Ganesh Shridhar [1 ,2 ]
Prabhu, Ashwatha Narayana [1 ]
Choudhari, Nagabhushan Jnaneshwar [1 ]
Timoumi, Abdelmajid [3 ]
Raviprakash, Y. [1 ]
机构
[1] Manipal Acad Higher Educ, Manipal Inst Technol, Dept Phys, Manipal, India
[2] Reva Univ, Sch Appl Sci, Dept Phys, Bengaluru, India
[3] Umm AL Qura Univ, Fac Sci Appl, Dept Phys, Mecca 21955, Saudi Arabia
关键词
Caesium germanium iodide; inorganic perovskites; lead-free perovskites; solar cells; photovoltaics; first-principles calculations; HALIDE PEROVSKITES; RAMAN; GAPS;
D O I
10.1007/s11664-024-11377-2
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Inorganic lead-free metal halide perovskites are being rigorously explored as a substitute for organic lead-based materials for various energy device applications. Germanium as a replacement for lead has been proven to give exemplary results theoretically, and there have been promising results. The current work presents the investigation of CsGeI3 (CGI) polycrystals grown using a solution-free melt-growth technique with low-cost precursors. A soak-ramp profile was designed to synthesize polycrystalline powders, which were evaluated for stability. X-ray diffraction and Raman spectroscopy analysis suggest the formation of CsGeI3 perovskite powders, matching the reported literature. Diffuse reflectance spectroscopy measurements showed the bandgap of the polycrystals to be around 1.6 eV. A prominent photoluminescence peak was obtained at 767 nm. The powders were examined using thermogravimetric analysis to assess the thermal degradation pathways. The as-grown inorganic perovskite polycrystals were relatively stable during storage under ambient conditions. Theoretical studies were also carried out to support the experimental data. Calculations were performed with different approximations, including local density approximation (LDA), generalized gradient approximation (GGA), and Heyd-Scuseria-Ernzerhof (HSE) approximation, out of which the HSE approximation yielded the most accurate results that matched the experimental findings. Moreover, for the CGI device with Ag electrodes simulated using SCAPS-1D software, highest incident photon-to-electron conversion efficiency was observed. The obtained optical and structural properties indicate the suitability of the synthesized CsGeI3 perovskite polycrystals for photovoltaic applications, specifically solar cells and light-emitting diodes.
引用
收藏
页码:6090 / 6097
页数:8
相关论文
共 75 条
[21]   High Thermoelectric Performance in the Cubic Inorganic Cesium Iodide Perovskites CsBI3 (B = Pb, Sn, and Ge) from First-Principles [J].
Jong, Un-Gi ;
Kim, Yun-Sim ;
Ri, Chol-Hyok ;
Kye, Yun-Hyok ;
Yu, Chol-Jun .
JOURNAL OF PHYSICAL CHEMISTRY C, 2021, 125 (11) :6013-6019
[22]   Halide Perovskites for Applications beyond Photovoltaics [J].
Kim, Hyojung ;
Han, Ji Su ;
Choi, Jaeho ;
Kim, Soo Young ;
Jang, Ho Won .
SMALL METHODS, 2018, 2 (03)
[23]   Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells [J].
Kojima, Akihiro ;
Teshima, Kenjiro ;
Shirai, Yasuo ;
Miyasaka, Tsutomu .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (17) :6050-+
[24]   Solution processed lead-free cesium titanium halide perovskites and their structural, thermal and optical characteristics [J].
Kong, Deying ;
Cheng, Dali ;
Wang, Xuewen ;
Zhang, Kaiyuan ;
Wang, Huachun ;
Liu, Kai ;
Li, Huanglong ;
Sheng, Xing ;
Yin, Lan .
JOURNAL OF MATERIALS CHEMISTRY C, 2020, 8 (05) :1591-1597
[25]   Lead-free germanium iodide perovskite materials for photovoltaic applications [J].
Krishnamoorthy, Thirumal ;
Ding, Hong ;
Yan, Chen ;
Leong, Wei Lin ;
Baikie, Tom ;
Zhang, Ziyi ;
Sherburne, Matthew ;
Li, Shuzhou ;
Asta, Mark ;
Mathews, Nripan ;
Mhaisalkar, Subodh G. .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (47) :23829-23832
[26]   Recent Advances and Perspectives on Powder-Based Halide Perovskite Film Processing [J].
Leupold, Nico ;
Panzer, Fabian .
ADVANCED FUNCTIONAL MATERIALS, 2021, 31 (14)
[27]   All-inorganic lead-free halide perovskite Cs2TeBr6 enables real-time touchless human breath and finger related humidity monitoring [J].
Li, Cheng-Tao ;
Chong, Meng-Xiao ;
Zhang, Le-Xi ;
Tang, Bo ;
Bie, Li-Jian .
SENSORS AND ACTUATORS B-CHEMICAL, 2023, 379
[28]   Recent Progress of Photocatalysis Based on Metal Halide Perovskites [J].
Li Xin ;
Zhang Taiyang ;
Wang Tian ;
Zhao Yixin .
ACTA CHIMICA SINICA, 2019, 77 (11) :1075-1088
[29]   Zero-Dimensional Lead-Free Halide with Indirect Optical Gap and Enhanced Photoluminescence by Sb Doping [J].
Lin, Jiawei ;
Liu, Kunjie ;
Ruan, Hang ;
Sun, Niu ;
Chen, Xin ;
Zhao, Jing ;
Guo, Zhongnan ;
Liu, Quanlin ;
Yuan, Wenxia .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2022, 13 (01) :198-207
[30]   A DFT study of the stability and optoelectronic properties of all-inorganic lead-free halide perovskites [J].
Liu, Diwen ;
Peng, Huan ;
Li, Qiaohong ;
Sa, Rongjian .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2022, 161