Effect of buffer layer composition and surface features on large area and high efficiency CuIn&lt;inf&gt;x&lt;/inf&gt;Ga&lt;inf&gt;1&amp;#x2212;x&lt;/inf&gt;Se&lt;inf&gt;2&lt;/inf&gt; solar cells

Kumar, T. Prem; Kim, Maeng Jun; Jeong, Ho-Jung; Hwang, Sehyun; Tarwal, N.L.; Jeong, Yon Kil; Jang, Jae Won

doi:10.1109/pvsc.2013.6744862

Cited by 2 publications

(1 citation statement)

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“…For a comparison of the PCDprocessed CdS buffer layer (PCD-CdS) with the conventional CdS buffer layer fabricated by CBD method (CBD-CdS), two CIGS solar cells were constructed with a PCD-CdS by an optimal PCD process, and with a CBD-CdS by a CBD process described elsewhere, respectively. 21 The solar-cell device was completed by depositing a radio frequency sputtered i-ZnO/ZnO:Al top-window layer on the asdeposited CdS buffer layer. Then a Ni/Al/Ni electrode grid was deposited on top of the ZnO:Al window layer by e-beam evaporation for better current collection.…”

Section: ■ Experimental Detailsmentioning

confidence: 99%

Low-Pollution and Controllable Selective-Area Deposition of a CdS Buffering Layer on CIGS Solar Cells by a Photochemical Technique

Yuan

Liao

et al. 2017

ACS Sustainable Chem. Eng.

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A chemical-bath deposition method has recently been applied for the industrial deposition of CdS buffer layers in high-efficiency Cu(In, Ga)Se 2 (CIGS) solar cells; however, its massive raw material waste and heavy pollution have also hindered its long-range industrialization. In this study, a type of low-pollution and controllable selective-area deposition of CdS thin films on cells was proposed and conducted by a photochemical deposition (PCD) technique using an aqueous solution containing S 2 O 3 2− , SO 3 2− , and Cd 2+ . The as-deposited films are low-crystallinity, uniform, and compact with thicknesses of 30−50 nm. Moreover, the depositions of CdS thin films were further investigated by tuning the deposition time, absorption of cadmium ions, sulfur concentration, and light intensity. Additionally, an ion-by-ion mechanism was proposed for the growth of CdS thin films by a PCD technique. Furthermore, the optimal CdS thin layer was applied in CIGS solar cells, which showed a high efficiency of 10.45%. This research would give new insight into the efficient deposition of CdS thin films on solar cells with low pollution.

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Section: ■ Experimental Detailsmentioning

confidence: 99%