Developing the Cd-free electron transport layer (ETL) is a crucial subject in the field of antimony selenide (SbSe) solar cells. At present, the power conversion efficiency (PCE) of the Cd-free SbSe solar cell is still substantially lower than that of CdS-based devices. It is significant to reveal the electron transfer features in SbSe/CdS heterojunction and SbSe/Cd-free ETL heterojunction for development of a Cd-free SbSe solar cell with high PCE. In this work, SbSe/Cd heterojunction and SbSe/ZnO heterojunction were systematically investigated from the view of PCE, trap state passivation, interface charge separation, and carrier kinetics on a picosecond time scale. Experimental results demonstrate that electron transfer at SbSe/CdS and SbSe/ZnO occurs on a comparable time scale with time constants of 1.38-3.42 and 1.91-3.17 ps, respectively. The PCE gap between the Cd-based device and the Cd-free device is mainly determined by the passivation effect. The excellent passivation effect of CdS on SbSe ensure the high electron transfer efficiency at SbSe/CdS heterojunction. Our results reveal the key challenges in improving the performance of Cd-free SbSe solar cells.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpclett.4c03330 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Innovative In Situ Passivation Strategy for High-Efficiency Sb(S,Se) Solar Cells.
Adv Mater
November 2024
Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, and School of Physics and Technology, Wuhan University, Wuhan, 430072, China.
An effective defect passivation strategy is crucial for enhancing the performance of antimony selenosulfide (Sb(S,Se)) solar cells, as it significantly influences charge transport and extraction efficiency. Herein, a convenient and novel in situ passivation (ISP) technique is successfully introduced to enhance the performance of Sb(S,Se) solar cells, achieving a champion efficiency of 10.81%, which is among the highest recorded for Sb(S,Se) solar cells to date.
View Article and Find Full Text PDFInvestigation of the aroma profile and blending strategy of Lu'an Guapian teas during grain rain period by sensory evaluation combined with SBSE-GC-MS, GC-O and OAV.
Food Chem
January 2025
State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang West Road, Hefei, Anhui 230036, China; School of Tea and Food Science and Technology, Anhui Agricultural University, 130 Changjiang West Road, Hefei 230036, China. Electronic address:
Article Synopsis
- * During GRP, LAGP tea starts with strong floral and fresh scents, which shift to a more intense soybean-like aroma as the harvesting continues.
- * The study identified specific compounds contributing to these aroma changes and proposed a blending strategy to optimize tea flavors, using sensory evaluation techniques like triangle tests.
Synthesis and Electronic Structure of Mid-Infrared Absorbing CuSbSe and CuSbSe Nanocrystals.
Chem Mater
August 2023
Institute for Electronics, Department of Information Technology and Electrical Engineering, ETH Zurich, Gloriastrasse 35, CH-8092 Zurich, Switzerland.
Aliovalent I-V-VI semiconductor nanocrystals are promising candidates for thermoelectric and optoelectronic applications. Famatinite CuSbSe stands out due to its high absorption coefficient and narrow band gap in the mid-infrared spectral range. This paper combines experiment and theory to investigate the synthesis and electronic structure of colloidal CuSbSe nanocrystals.
View Article and Find Full Text PDFTellurium Doping Inducing Defect Passivation for Highly Effective Antimony Selenide Thin Film Solar Cell.
Nanomaterials (Basel)
March 2023
Shenzhen Key Laboratory of Advanced Thin Films and Applications, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Article Synopsis
- Antimony selenide (SbSe) shows potential as a photovoltaic material due to its strong photoelectric properties, but issues like low carrier transport efficiency and surface oxidation limit its effectiveness.
- The study finds that adding tellurium (Te) enhances the growth orientation and atomic ratio in the Te-SbSe thin film, leading to improved structural characteristics.
- With these optimizations, a solar cell efficiency of 7.61% was achieved, alongside promising metrics like an open-circuit voltage of 474 mV and a fill factor of 64.09%, suggesting a viable approach to improve SbSe solar cell performance.
Oxygen Content Modulation Toward Highly Efficient SbSe Solar Cells.
ACS Appl Mater Interfaces
December 2022
Institute of Photoelectronic Thin Film Devices and Technology and Tianjin Key Laboratory of Thin Film Devices and Technology, Nankai University, Tianjin300350, China.
Vapor-transport deposition (VTD) method is the main technique for the preparation of SbSe films. However, oxygen is often present in the vacuum tube in such a vacuum deposition process, and SbO is formed on the surface of SbSe because the bonding of Sb-O is formed more easily than that of Sb-Se. In this work, the formation of SbO and thus the carrier transport in the corresponding solar cells were studied by tailoring the deposition microenvironment in the vacuum tube during SbSe film deposition.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!