研究目的
Investigating the photo-carrier-guiding behavior of vertically grown MoS2 and MoSe2 in highly efficient low-light transparent photovoltaic devices on large-area rough substrates.
研究成果
The study successfully demonstrated the use of vertically grown MoX2 films as CGLs in a-Si:H-TFSCs on rough substrates, significantly improving cell performance under low-light conditions. The transparent cells showed outstanding PCE and high Rsh values, making them suitable for building-integrated PV windows or indoor PV applications.
研究不足
The study is limited by the technical constraints of growing high-quality MoX2 films on rough substrates and the potential for optimization in the growth process to further improve cell performance.
1:Experimental Design and Method Selection:
The study involved the vertical growth of MoX2 (X = S, Se) films on rough transparent conducting F-doped SnO2 glass substrates using a metal-agglomeration-suppressed growth (MASG) method. The films were used as photogenerated carrier-guiding layers (CGLs) in transparent hydrogenated amorphous silicon (a-Si:H) thin film solar cells (TFSCs).
2:Sample Selection and Data Sources:
Samples included MoS2 and MoSe2 films grown on SiO2/Si and FTO glass substrates. The FTO substrates had a root-mean-square (rms) roughness of 38.0 nm.
3:0 nm.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included a solar simulator (ORIEL Instruments), TEM system (JEOL, JEM-ARM200F), Raman spectroscopy system (HORIBA Jobin Yvon), and an ultraviolet/visible/near infrared spectrophotometer (Lambda 1050). Materials included sulfur and selenium granules (99.999%, iTASCO), and Mo granules (99.99%, LTS).
4:0). Materials included sulfur and selenium granules (999%, iTASCO), and Mo granules (99%, LTS).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Mo films were sulfurized or selenized at growth temperatures of 500, 600, or 700 °C on SiO2/Si substrates; or at 530 °C on FTO glass substrates. The temperature of S- and Se-cracking zones was 950 °C. Layers of p-type μc-Si:H, intrinsic a-Si:H, and n-type μc-Si:H were deposited using PECVD at a substrate temperature of 200 °C.
5:Data Analysis Methods:
The J–V characteristics were measured at room temperature at light intensities of 100 to 20 mW cm?2 using a solar simulator. EQE values were measured using an EQE measurement system (IQE-200, Newport).
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