Effects of Thermochemical Treatment on CuSbS2 Photovoltaic Absorber Quality and Solar Cell Reproducibility

CuSbS2 is a promising nontoxic and earth-abundant photovoltaic absorber that is chemically simpler than the widely studied Cu2ZnSnS4. However, CuSbS2 photovoltaic (PV) devices currently have relatively low efficiency and poor reproducibility, often due to suboptimal material quality and insufficient optoelectronic properties. To address these issues, here we develop a thermochemical treatment (TT) for CuSbS2 thin films, which consists of annealing in Sb2S3 vapor followed by a selective KOH surface chemical etch. The annealed CuSbS2 films show improved structural quality and optoelectronic properties, such as stronger band-edge photoluminescence and longer photoexcited carrier lifetime. These improvements also lead to more reproducible CuSbS2 PV devices, with performance currently limited by a large cliff-type interface band offset with CdS contact. Overall, these results point to the potential avenues to further increase the performance of CuSbS2 thin film solar cell, and the findings can be transferred t...

[1]  Sudip Kumar Batabyal,et al.  Antimony Doping in Solution-processed Cu2 ZnSn(S,Se)4 Solar Cells. , 2015, ChemSusChem.

[2]  A. Walsh,et al.  A universal chemical potential for sulfur vapours , 2015, Chemical science.

[3]  Volker L. Deringer,et al.  Vibrational properties and bonding nature of Sb2Se3 and their implications for chalcogenide materials† †Electronic supplementary information (ESI) available: Additional computational data and discussion. See DOI: 10.1039/c5sc00825e Click here for additional data file. , 2015, Chemical science.

[4]  A. Kanai,et al.  Annealing temperature dependence of photovoltaic properties of solar cells containing Cu2SnS3 thin films produced by co‐evaporation , 2015 .

[5]  Jiang Tang,et al.  Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries , 2015, Nature Photonics.

[6]  Stephan Lany,et al.  CuSbSe2 photovoltaic devices with 3% efficiency , 2015, 1505.02311.

[7]  S. Shaji,et al.  Progress in development of copper antimony sulfide thin films as an alternative material for solar energy harvesting , 2015, Journal of Materials Science: Materials in Electronics.

[8]  C. Dehart,et al.  Accelerated development of CuSbS2 thin film photovoltaic device prototypes , 2015, 1504.01345.

[9]  T. Unold,et al.  Effects of disorder on carrier transport in Cu$_2$SnS$_3$ , 2015, 1504.01327.

[10]  S. Lany,et al.  Entropy-Driven Clustering in Tetrahedrally Bonded Multinary Materials , 2015 .

[11]  A. Ray,et al.  Solution processed bismuth ferrite thin films for all-oxide solar photovoltaics , 2015 .

[12]  Yuki Nishi,et al.  Heterojunction solar cell with 6% efficiency based on an n-type aluminum–gallium–oxide thin film and p-type sodium-doped Cu2O sheet , 2015 .

[13]  Jeremy R. Poindexter,et al.  3.88% Efficient Tin Sulfide Solar Cells using Congruent Thermal Evaporation , 2014, Advanced materials.

[14]  David S. Ginley,et al.  Thin film synthesis and properties of copper nitride, a metastable semiconductor , 2014 .

[15]  Lauryn L. Baranowski,et al.  Comparison of Cu2SnS3 and CuSbS2 as potential solar cell absorbers , 2014, 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC).

[16]  C. Kaufmann,et al.  Charge carrier mobilities and dynamics in thin film compound semiconductor materials from transient Thz absorption , 2014, 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC).

[17]  Jiang Tang,et al.  CuSbS2 as a promising earth-abundant photovoltaic absorber material: A combined theoretical and experimental study , 2014 .

[18]  D. Kuo,et al.  Process limitation for p-type CuSbS2 semiconductor with high electrical mobility of 20 cm2 V−1 s−1 , 2014 .

[19]  W. Butler,et al.  Selective Nanocrystal Synthesis and Calculated Electronic Structure of All Four Phases of Copper–Antimony–Sulfide , 2014 .

[20]  J. Y. Kim,et al.  Highly efficient copper-zinc-tin-selenide (CZTSe) solar cells by electrodeposition. , 2014, ChemSusChem.

[21]  Angela N. Fioretti,et al.  Defect Tolerant Semiconductors for Solar Energy Conversion. , 2014, The journal of physical chemistry letters.

[22]  Charlotte Platzer-Björkman,et al.  A low-temperature order-disorder transition in Cu2ZnSnS4 thin films , 2014 .

[23]  Giuseppe Gigli,et al.  MAPbI3-xClx Mixed Halide Perovskite for Hybrid Solar Cells: The Role of Chloride as Dopant on the Transport and Structural Properties , 2013 .

[24]  Minghui Yang,et al.  Strong optical absorption in CuTaN2 nitride delafossite , 2013 .

[25]  Tayfun Gokmen,et al.  Band tailing and efficiency limitation in kesterite solar cells , 2013 .

[26]  Otwin Breitenstein,et al.  Understanding the current-voltage characteristics of industrial crystalline silicon solar cells by considering inhomogeneous current distributions , 2013 .

[27]  Kris T. Delaney,et al.  Structural and Optoelectronic Characterization of RF Sputtered ZnSnN2 , 2013, Advanced materials.

[28]  Marc Meuris,et al.  Crystalline thin‐foil silicon solar cells: where crystalline quality meets thin‐film processing , 2012 .

[29]  R. Eichberger,et al.  Multiple-Trapping Governed Electron Transport and Charge Separation in ZnO/In2S3 Core/Shell Nanorod Heterojunctions , 2012 .

[30]  D. Nocera,et al.  Wireless Solar Water Splitting Using Silicon-Based Semiconductors and Earth-Abundant Catalysts , 2011, Science.

[31]  A. Ghoneim,et al.  Investigation of the Performance of CIS Photovoltaic Modules under Different Environmental Conditions , 2011 .

[32]  M. A. Malik,et al.  The chemical vapor deposition of Cu2ZnSnS4 thin films , 2011 .

[33]  Thuc-Quyen Nguyen,et al.  Small Molecule Solution-Processed Bulk Heterojunction Solar Cells† , 2011 .

[34]  Otwin Breitenstein,et al.  Influence of Defects on Solar Cell Characteristics , 2009 .

[35]  A Paul Alivisatos,et al.  Materials availability expands the opportunity for large-scale photovoltaics deployment. , 2009, Environmental science & technology.

[36]  Yuh‐Lang Lee,et al.  Highly Efficient CdSe-Sensitized TiO2 Photoelectrode for Quantum-Dot-Sensitized Solar Cell Applications , 2008 .

[37]  N. Lewis,et al.  Powering the planet: Chemical challenges in solar energy utilization , 2006, Proceedings of the National Academy of Sciences.

[38]  J. Schoonman,et al.  Defect Chemistry of Cusbs2 , 2006, 2006 International Semiconductor Conference.

[39]  P. K. Nair,et al.  Photovoltaic p-i-n Structure of Sb2S3 and CuSbS2 Absorber Films Obtained via Chemical Bath Deposition , 2005 .

[40]  A. Ortiz,et al.  Fabrication of SnS2/SnS heterojunction thin film diodes by plasma-enhanced chemical vapor deposition , 2005 .

[41]  Wim C. Sinke,et al.  Explanation of high solar cell diode factors by nonuniform contact resistance , 2005 .

[42]  J. McCusker.  Femtosecond absorption spectroscopy of transition metal charge-transfer complexes. , 2003, Accounts of chemical research.

[43]  Frank Lenzmann,et al.  A Solid-State Dye-Sensitized Solar Cell Fabricated with Pressure-Treated P25−TiO2 and CuSCN: Analysis of Pore Filling and IV Characteristics , 2002 .

[44]  Charalambos C. Katsidis,et al.  General transfer-matrix method for optical multilayer systems with coherent, partially coherent, and incoherent interference. , 2002, Applied optics.

[45]  Rommel Noufi,et al.  Optimization of CBD CdS process in high-efficiency Cu(In, Ga)Se2-based solar cells , 2002 .

[46]  Uwe Rau,et al.  Electronic properties of Cu(In,Ga)Se2 heterojunction solar cells–recent achievements, current understanding, and future challenges , 1999 .

[47]  U. Rau.  Tunneling-enhanced recombination in Cu(In, Ga)Se2 heterojunction solar cells , 1999 .

[48]  Andreas Schenk,et al.  Coupled defect‐level recombination: Theory and application to anomalous diode characteristics , 1995 .

[49]  D. Ferro,et al.  Study of the vaporization behaviour of Sb2S3 and Sb2Te3 from their vapour pressure measurements , 1992 .

[50]  D. Mitzi,et al.  The Role of Sodium as a Surfactant and Suppressor of Non‐Radiative Recombination at Internal Surfaces in Cu2ZnSnS4 , 2015 .

[51]  S. Lany,et al.  Self-regulated growth and tunable properties of CuSbS2 solar absorbers , 2015 .

[52]  S. Ikeda,et al.  Thin film solar cell based on CuSbS2 absorber fabricated from an electrochemically deposited metal stack , 2014 .

[53]  L. Zakharov,et al.  Earth-abundant Cu-based chalcogenide semiconductors as photovoltaic absorbers , 2013 .