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Quantification of the Contact Resistance of ZnO/MoSe2/Mo Contact Formed in a Monolithic CIGS Photovoltaic Module

  • Original Article - Energy and Sustainability
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Abstract

This study investigated the effect of MoSe2 on the contact resistance (RC) of the transparent conducting oxide (TCO) and Mo contact in the P2 region of the CIGS photovoltaic module. MoSe2 formed in the process of making the Cu(In,Ga)Se2 (CIGS) absorber layer imparts ohmic contact properties to the CIGS/Mo contact. In the process of connecting cells in series to fabricate a CIGS photovoltaic module, TCO/MoSe2/Mo contact was formed, and it was confirmed that MoSe2 increased the RC of this contact using the transmission line method. It is estimated that the reason MoSe2 increases the RC is due to conduction band offset (CBO). When ZnO used as TCO forms a contact with MoSe2, 0.6 eV CBO is formed due to the difference in electron affinity. This CBO can act as a resistor that impedes the flow of current. Therefore, in order to reduce the contact resistance of the CIGS solar module and increase the power conversion efficiency, it is necessary to make the MoSe2 thin enough to facilitate carrier tunneling.

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References

  1. Li, H., Qu, F., Luo, H., Niu, X., Chen, J., Zhang, Y., Yao, H., Jia, X., Gu, H., Wang, W.: Engineering CIGS grains qualities to achieve high efficiency in ultrathin Cu(InxGa1−x)Se2 solar cells with a single-gradient band gap profile. Results Phys. 12, 704–711 (2019)

    Article  Google Scholar 

  2. Jung, S.H., Ahn, S.J., Yun, J.H., Gwak, J.H., Kim, D.H., Yoon, K.H.: Effects of Ga contents on properties of CIGS thin films and solar cells fabricated by co-evaporation technique. Curr. Appl. Phys. 10, 990–996 (2010)

    Article  Google Scholar 

  3. Nakada, T.: CIGS-based Thin Film Solar Cells and Modules: Unique Material Properties. Electron. Mater. Lett. 8, 179–185 (2012)

    Article  CAS  Google Scholar 

  4. Kim, J., Shin, B.: Strategies to Reduce the Open-Circuit Voltage Deficit in Cu2ZnSn(S,Se)4 Thin Film Solar Cells. Electron. Mater. Lett. 13, 373–392 (2017)

    Article  Google Scholar 

  5. Delahoy, A.E., Chen, L., Akhtar, M., Sang, B., Guo, S.: New technologies for CIGS photovoltaics. Sol Energy. 77, 785–793 (2004)

    Article  CAS  Google Scholar 

  6. Powalla, M., Cemernjak, M., Eberhardt, J., Kessler, F., Kniese, R., Mohring, H.D., Dimmler, B.: Large-area CIGS modules: pilot line production and new developments. Sol. Energy Mater. Sol. Cells 90, 3158–3164 (2006)

    Article  CAS  Google Scholar 

  7. Nishiwaki, S., Burn, A., Buecheler, S., Muralt, M., Pilz, S., Romano, V., Witte, R., Krainer, L., Spühler, G.J., Tiwari, A.N.: A monolithically integrated high-efficiency Cu(In, Ga)Se2 mini-module structured solely by laser. Prog. Photovolt. 23, 1908–1915 (2015)

    Article  CAS  Google Scholar 

  8. Gečys, P., Markauskas, E., Nishiwaki, S., Buecheler, S., Loor, R.D., Burn, A., Romano, V., Račiukaitis, G.: CIGS thin-film solar module processing: case of high-speed laser scribing. Sci. Rep. 7, 40502 (2017)

    Article  Google Scholar 

  9. Wada, T., Kohara, N., Nishiwaki, S., Negami, T.: Characterization of the Cu(In, Ga)Se2/Mo interface in CIGS solar cells. Thin Solid Films 387, 118–122 (2001)

    Article  CAS  Google Scholar 

  10. Kim, K.B., Kim, M., Baek, J., Park, Y.J., Lee, J.R., Kim, J.S., Jeon, C.W.: Influence of Cr Thin Films on the Properties of Flexible CIGS Solar Cells on Steel Substrates. Electron. Mater. Lett. 10, 247–251 (2014)

    Article  CAS  Google Scholar 

  11. Abou-Ras, D., Kostorz, G., Bremaud, D., Kälin, M., Kurdesau, F.V., Tiwari, A.N., Döbelic, M.: Formation and characterisation of MoSe2 for Cu(In, Ga)Se2 based solar cells. Thin Solid Films 480–481, 433–438 (2005)

    Article  Google Scholar 

  12. Yoon, J.H., Park, J.K., Kim, W.M., Lee, J.W., Pak, H.S., Jeong, J.H.: Characterization of efficiency-limiting resistance losses in monolithically integrated Cu(In, Ga)Se2 solar modules. Sci. Rep. 5, 7690 (2015)

    Article  CAS  Google Scholar 

  13. Song, Y.J., Kang, J.Y., Baek, G.Y., Bae, J.A., Yang, S.H., Jeon, C.W.: Two-step selenization using nozzle free Se shower for Cu(In, Ga)Se2 thin film solar cell. Prog. Photovolt. 26, 223–233 (2018)

    Article  CAS  Google Scholar 

  14. Rouhi, J., Ooi, C.H.R., Mahmud, S., Mahmood, M.R.: Synthesis of Needle-Shape ZnO-ZnS Core-Shell Heterostructures and Their Optical and Field Emission Properties. Electron. Mater. Lett. 11, 957–963 (2015)

    Article  CAS  Google Scholar 

  15. Hussain, B., Aslam, A., Khan, T.M., Creighton, M., Zohuri, B.: Electron affinity and bandgap optimization of zinc oxide for improved performance of ZnO/Si heterojunction solar cell using PC1D simulations. Electronics 8, 238 (2019)

    Article  CAS  Google Scholar 

  16. Sharbati, S., Sites, J.R.: Impact of the band offset for n-Zn(O, S)/p-Cu(In, Ga)Se2 solar cells. IEEE J. Photovolt. 4, 697–702 (2014)

    Article  Google Scholar 

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Acknowledgements

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20173010012980). This work was supported by “Human Resources Program in Energy Technology” of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (No. 20204010600100).

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  1. School of Chemical Engineering, Yeungnam University, Gyeongsan, Korea

    Sung-Wook Cho, A.-Hyun Kim, Gyeong-A. Lee & Chan-Wook Jeon

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  1. Sung-Wook Cho
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Cho, SW., Kim, AH., Lee, GA. et al. Quantification of the Contact Resistance of ZnO/MoSe2/Mo Contact Formed in a Monolithic CIGS Photovoltaic Module. Electron. Mater. Lett. 17, 421–426 (2021). https://doi.org/10.1007/s13391-021-00294-9

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  • DOI: https://doi.org/10.1007/s13391-021-00294-9

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