研究目的
Investigating the role of GQDs additive in TiO2 nanorods as an electron transfer layer on performance improvement of the perovskite solar cells.
研究成果
The study demonstrated significant improvement in PCE of PSCs by employing TiO2 NRs and further enhancing it with GQDs. The combination of TiO2 NRs and GQDs reduced charge recombination, increased charge transfer, and improved optical properties, leading to enhanced PCE. The hydrothermal method presented offers a simple and effective approach for improving photovoltaic device performance.
研究不足
The study focuses on the improvements in electrical properties of ETL and the effect of GQDs on the morphology of ETL has not been described in details. The research could be expanded to explore the morphological impacts more thoroughly.
1：Experimental Design and Method Selection:
The study employed a simple one-step hydrothermal method for the synthesis of TiO2 NRs and GQDs-TiO2 NRs. The hydrothermal conditions were optimized for temperature, time, and Ti precursor concentration.
2：Sample Selection and Data Sources:
Fluorine-doped tin oxide (FTO) sheets were used as substrates. The perovskite layer was deposited on the ETL by a two-step spin coating procedure.
3：List of Experimental Equipment and Materials:
Materials included TiO2 paste, Titanium (IV)-isopropoxide (TTIP), methylammonium bromide (MABr), formamidinium iodide (FAI), cesium iodide, lead(II) iodide (PbI2), lead(II) bromide (PbBr2), Spiro-OMeTAD, 4-tert-butylpyridine (TBP), lithium bis (trimethylsilyl) amide (LiTFSI), and others. Equipment included a Biologic SP-300 potentiostat for J-V characteristic curves, Jasco V-750 UV-Vis spectrophotometer, FE-SEM (JSM-7001), and Philips X Pert PRO MPD diffractometer.
4：Experimental Procedures and Operational Workflow:
The synthesis involved hydrothermal growth of NRs on FTO substrates, followed by annealing. Perovskite solution was prepared and deposited on the ETL, followed by Spiro-OMeTAD solution spin coating and Au electrode deposition.
5：Data Analysis Methods:
The performance of PSCs was assessed by J-V measurements under AM 1.5 G solar illumination. EIS measurements were carried out to determine charge carrier transport and recombination behavior.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
Titanium (IV)-isopropoxide (TTIP)
97%
Sigma-Aldrich
Used as the source of Ti in the hydrothermal synthesis of TiO2 NRs.
-
Jasco V-750 UV-Vis spectrophotometer
V-750
Jasco
Used to obtain absorbance spectra of the ETL and perovskite films.
-
Fluorine-doped tin oxide (FTO) sheets
Solaronix
Used as substrates for the perovskite solar cells.
-
TiO2 paste
Solaronix
Used for the preparation of the mp TiO2 on the FTO.
-
Biologic SP-300 potentiostat
SP-300
Biologic
Used for J-V characteristic curves calculation under one sun illumination AM 1.5 G simulated sunlight.
-
FE-SEM
JSM-7001
JSM
Used to assess the surface morphologies of the ETL, perovskite films and cross sectional images.
-
Philips X Pert PRO MPD diffractometer
X Pert PRO MPD
Philips
Used for Grazing incident X-ray diffraction (GIXRD) patterns recording.
-
登录查看剩余5件设备及参数对照表
查看全部
