Synthesis and structural characterization of Ag2ZnSnS4 crystals

Piętak, Karolina; Jastrzębski, Cezariusz; Zberecki, K.; Jastrzebski, Daniel; Paszkowicz, W.; Podsiadło, S.

doi:10.1016/j.jssc.2020.121467

Cited by 17 publications

(15 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, most of the works on ACZTS nano-or microcrystals have reported main Raman peak around the same frequency as for CZTS ones, 332 -338 cm -1 [31,27], although some authors reported the main Raman peak at 345 -348 cm -1 [28,29,32] (mostly without a clear statement about the type of crystal structure). The latter most likely were indicating the formation of stannite AZTS, as can be concluded from the only existing Raman study of a single crystal AZTS [26], which can be used as a reference. Despite the high crystallinity and large NC size (~20 nm), neither XRD nor TEM was able to prove the (kesterite or stannite) structure in Ref.…”

Section: Resultsmentioning

confidence: 94%

“…It is capable of detecting secondary (impurity) phases [15,24], and is not demanding to the amount of the material and its special preparation for the measurement, unlike XRD and TEM, and can probe NCs even in assynthesized solutions. Most Raman studies of CAZTS and AZTS were performed so far on poly-/microcrystalline samples [25][26][27][28][29][30], with much fewer reports for NC samples [11,12,31]. However, even in microcrystalline and single crystals samples, the assignment of the Raman spectra to either kesterite or stannite structure is ambiguous or even contradictory.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Colloidal Cu2ZnSnS4-based and Ag-doped Nanocrystals: Synthesis and Raman Spectroscopy Study

Dzhagan

Kapush

Budzulyak

et al. 2021

Phys. Chem. Solid St.

View full text Add to dashboard Cite

Cu2ZnSnS4 (CZTS) is one of the promising materials for absorber layers of new-generation thin film solar cells. Various synthetic routes of materials preparation and structural characterization have been explored so far. Further tuning of the CZTS properties is realized via partial substitution of the cations. Here we have used an affordable and scalable method of synthesizing colloidal CZTS nanocrystals (NC) in an aqueous solution. Variation of the synthesis parameters, in particular pH of the solution, was employed to improve the crystallinity of the NCs. Furthermore, CZTS NCs with partial substitution of Cu for Ag were also successfully synthesized. Raman spectroscopy was employed as a prime tool of structural characterization of the NCs obtained, along with optical absorption spectroscopy and ab initio DFT lattice dynamics calculations. An experimentally observed slight upward shift of the main phonon Raman peak upon increase of the Ag content in (AgxCu1-x)2ZnSnS4 NCs is in agreement with the trend predicted by DFT calculation. No pure Ag2ZnSnS4 NCs could be formed, indicating a critical role of Cu in forming the kesterite structure NCs under given synthesis conditions in an aqueous medium.

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Colloidal Cu2ZnSnS4-based and Ag-doped Nanocrystals: Synthesis and Raman Spectroscopy Study

Dzhagan

Kapush

Budzulyak

et al. 2021

Phys. Chem. Solid St.

View full text Add to dashboard Cite

show abstract

“…Raman spectra of the precursor films are shown in Figure 2b, which confirm that all the ACZTS precursor films have a kesterite structure with the main peak at 329 cm −1[ 42 ] without detectable secondary phases. AZTS film exhibits better defined Raman peaks around 224, 268, 295, 344, and 370 cm −1[ 43 ] due to higher crystallinity.…”

Section: Resultsmentioning

confidence: 99%

Ag Incorporation with Controlled Grain Growth Enables 12.5% Efficient Kesterite Solar Cell with Open Circuit Voltage Reached 64.2% Shockley–Queisser Limit

Gong

Qiu

Niu

et al. 2021

Adv Funct Materials

134

132

View full text Add to dashboard Cite

The large open‐circuit voltage deficit (Voc,def) is the key issue that limits kesterite (Cu2ZnSn(S,Se)4, [CZTSSe]) solar cell performance. Substitution of Cu+ by larger ionic Ag+ ((Ag,Cu)2ZnSn(S,Se)4, [ACZTSSe]) is one strategy to reduce Cu–Zn disorder and improve kesterite Voc. However, the so far reported ACZTSSe solar cell has not demonstrated lower Voc,def than the world record device, indicating that some intrinsic defect properties cannot be mitigated using current approaches. Here, incorporation of Ag into kesterite through a dimethyl sulfoxide (DMSO) solution that can facilitate direct phase transformation grain growth and produce a uniform and less defective kesterite absorber is reported. The same coordination chemistry of Ag+ and Cu+ in the DMSO solution results in the same reaction path of ACZTSSe to CZTSSe, resulting in significant suppression of CuZn defects, its defect cluster [2CuZn + SnZn], and deep level defect CuSn. A champion device with an efficiency of 12.5% (active area efficiency 13.5% without antireflection coating) and a record low Voc,def (64.2% Shockley–Queisser limit) is achieved from ACZTSSe with 5% Ag content.

show abstract

“…Compounds 1 and 4 were first studied by Johan in 1982 and Jennifer in 2008, respectively. , In DL materials, all tetrahedral structural units are arranged in the same direction. , The different arrangements of tetrahedral structural units along three directions promote the evolvement of three types of space groups, viz. I 2 m for 1 , Pmn 2 1 for 2 and 3 , and Pn for 4 .…”

Section: Resultsmentioning

confidence: 99%

Stepwise Li Substitution Induced Structure Evolution and Improved Nonlinear Optical Performance for Diamond-like Sulfides

et al. 2021

View full text Add to dashboard Cite

One of the key scientific issues for exploration of novel infrared nonlinear optical (NLO) crystals is to obtain ones with good hybrid NLO behaviors. Herein, we report four diamond-like Ag-based sulfides via stepwise Li substitution of Ag in Ag 2 ZnSnS 4 , including Ag 2 ZnSnS 4 (1), (Li 1.22 Ag 0.78 )ZnSnS 4 (2), (Li 1.58 Ag 0.42 )ZnSnS 4 (3), and Li 2 ZnSnS 4 (4). With the increase of Li content, the sulfide's noncentrosymmetric crystal structure changes from tetragonal I42m for 1, to orthorhombic Pmn2 1 for 2 and 3, and to monoclinic Pn for 4. Accordingly, their NLO responses are improved along with the increase of Li content, viz. from non-NLO-active for 1, to non-phase-matchable for 2 and 3, and to phase-matchable for 4. Their optical band gaps also increase regularly. The relationship between their chemical compositions, crystal structures, and NLO activities is investigated by means of chemical structural analysis and theoretical calculation. This work offers a new systematic case for designing promising NLO-active compounds via rarely adopted cation's stepwise partial substitution and understanding the chemical composition−structure−NLO property relationship.

show abstract

Synthesis and structural characterization of Ag2ZnSnS4 crystals

Cited by 17 publications

References 32 publications

Colloidal Cu2ZnSnS4-based and Ag-doped Nanocrystals: Synthesis and Raman Spectroscopy Study

Colloidal Cu2ZnSnS4-based and Ag-doped Nanocrystals: Synthesis and Raman Spectroscopy Study

Ag Incorporation with Controlled Grain Growth Enables 12.5% Efficient Kesterite Solar Cell with Open Circuit Voltage Reached 64.2% Shockley–Queisser Limit

Stepwise Li Substitution Induced Structure Evolution and Improved Nonlinear Optical Performance for Diamond-like Sulfides

Contact Info

Product

Resources

About