Manipulating the Electrical Properties of Sb₂(S,Se)₃ Film for High‐Efficiency Solar Cell

Abstract

Material processing is critical for obtaining high-performance solar cells, which influences the morphological, crystal, and electrical properties of the functional materials in a device. Sb 2 (S,Se) 3 can be considered as a quasi-binary compound since sulfur and selenium can be alloyed with a continuous ratio due to the identical crystal structure of Sb 2 S 3 and Sb 2 Se 3 and close ionic radius between sulfur and selenium. [1-3] This simple chemical composition allows for facile synthesis of Sb 2 (S,Se) 3 film with a well-defined crystal structure. In this regard, both

Efficient Sb2(S,Se)3 Solar Modules Enabled by Hydrothermal Deposition

“…In addition, the ultraviolet photoelectron spectroscopy (UPS) was adopted to characterize the energy band (Figure 5d,e), the energy‐level diagram of the device is shown in Figure 5f, corresponding well with the previous work of our group. [ 4,19,20 ] It can be seen that the electrons and holes generated in the Sb 2 (S,Se) 3 absorption layer can be effectively extracted, thus ensuring high photovoltaic energy conversion efficiency.…”

“…In the hydrothermal deposition of Sb 2 (S,Se) 3 film, the precursor materials are well dissolved in the aqueous solution, which is capable of initiating uniform nucleation on the CdS substrate and the following film growth. [ 4 ] The film thickness is ≈300 nm, whereas the variation is only 20 nm, indicating superior uniformity of the as‐prepared film. This deposition manner also leads to the obtained film displaying uniform optical properties as well as crystallinity throughout the detected positions.…”

“…According to the reported method at small scale, [ 4,19 ] Sb 2 (S,Se) 3 film was synthesized by hydrothermal method with KSbC 4 H 4 O 7 ·0.5H 2 O, Na 2 S 2 O 3 ·5H 2 O, and selenourea (SU) as Sb, S, and Se sources, respectively. First, the mixed solution with 20 m m of KSbC 4 H 4 O 7 ·0.5H 2 O and 80 m m of Na 2 S 2 O 3 ·5H 2 O was prepared after being stirred till a clear and uniform mixed liquid was formed.…”

“…[ 3 ] In addition, this kind of material possesses excellent stability with abundant compositional elements. [ 1 ] Thanks to the fast development in the materials synthesis in laboratory research, the PCE of Sb 2 (S,Se) 3 solar cell has reached over 10%, [ 4 ] suggesting great premise in practical applications.…”

Recent Progress in Fabrication of Antimony/Bismuth Chalcohalides for Lead-Free Solar Cell Applications

“…Although varied engineering methods and device architectures have been employed to achieve high-efficiency for Sb chalcogenide solar cells, the performances of these cells remained below the 10% milestone until 2018 [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. However, recently, a PCE of 9.2% was obtained from the [001]-oriented Sb 2 Se 3 nanorod solar cells [ 36 ], and finally, a PCE of 10.5% was reported by Chen’s group from the hydrothermally deposited Sb 2 (S,Se) 3 thin film solar cells [ 22 , 37 ].…”