Thin film solar cells of CdS/PbS chemically deposited by an ammonia-free process

Hernández-Borja, J.; Vorobiev, Yuri V.; Ramı́rez-Bon, R.

doi:10.1016/j.solmat.2011.02.012

Cited by 140 publications

(78 citation statements)

References 22 publications

(35 reference statements)

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“…Renewed and growing interest has been focused on PbS, one of narrow band gap (IV-VI) semiconductor compounds, for nanocrystalline solar cells, electroluminescent devices, gas sensors and some optoelectronic devices [1][2][3][4]. This interest arose because of certain intriguing properties such as large excitation Bohr radius of PbS (∼18 nm) [5,6] which results in strong quantum confinement of both electrons and holes in nanosized structures [7] and the potential of tailoring both lattice parameters and optical band gap for effective solar devices [8].…”

Section: Introductionmentioning

confidence: 99%

Surface microstructure, optical and electrical properties of spray pyrolyzed PbS and Zn-PbS thin films for optoelectronic applications

Abiodun

Ajenifuja

Bidini

et al. 2017

Materials Science-Poland

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Lead sulphide (PbS) and zinc-doped lead sulphide (Zn-PbS) thin films were prepared by chemical spray pyrolysis on soda lime glass substrates at a temperature of 250°C. Precursors were prepared from chemical reagents including zinc acetate, lead acetate and thiourea. The deposited films thicknesses and elemental composition were studied by Rutherford backscattering spectroscopy (RBS); the percentages of Pb and S were estimated as 40.58 % and 59.42 %, respectively, while for the Zn-doped sample, the percentages of Zn, Pb and S were respectively 4.84 %, 44.57 % and 50.59 %. Morphological studies revealed that the films were continuous and the particles were uniformly distributed across the substrate surface. AFM probe revealed nanostructured films with particles densely distributed across the substrates surfaces with incorporation of Zn 2+ . Statistical distribution of the grains over a specific projected area indicated average growth height of about 47 nm. Optical studies indicated that the transmission in visible light region of Zn-PbS thin film was superior to that of the undoped sample. Interband transition of both PbS and Zn-PbS films is directly allowed and their energy band gaps were found to be 0.43 eV and 1.45 eV, respectively. Electrical characterization showed that both films are of p-type conductivity with surface resistivity values of the order of 10 4 Ω·cm.

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Section: Introductionmentioning

confidence: 99%

Surface microstructure, optical and electrical properties of spray pyrolyzed PbS and Zn-PbS thin films for optoelectronic applications

Abiodun

Ajenifuja

Bidini

et al. 2017

Materials Science-Poland

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“…In particular, using only ammonia-free CBD processes we produced CdS/PbS solar cell with energetic efficiency of 1.6 % and quantum efficiency of 25 % [6]. It should be mentioned that PbS as absorber in solar cell is very promising material, being very sensitive to crystallite size so that its band gap can be monitored to great extent.…”

Section: Introductionmentioning

confidence: 99%

PbS Thin Films for Photovoltaic Applications Obtained by Non-Traditional Chemical Bath Deposition

Pérez-García

Ramı́rez-Bon

Vorobiev

2015

MATEC Web of Conferences

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Abstract. To optimize cost-efficiency relation for thin film solar cells, we explore the recently developed versions of chemical deposition of semiconductor films, together with classic CBD (Chemical Bath Deposition): SILAR (Successive Ionic Layer Adsorption and Reaction) and PCBD (Photo Chemical Bath Deposition), all of them ammonia-free and ecologically friendly. The films of CdS and PbS were made, and experimental solar cells with CdS window layer and PbS absorber elaborated. We found that band gap of PbS films can be monitored by deposition process due to porosity-induced quantum confinement which depends on the parameters of the process. We expect that the techniques employed can be successfully used for production of optoelectronic devices. IntroductionThe most important problem in development of modern solar cells is the production cost which includes the cost of materials and that of technologies involved as well as the energy consumption at technological processes. Besides, the corresponding technology of production of devices for generation of clean energy should be ecologically clean.One of the techniques that is traditionally used to prepare thin films of chalcogenide semiconductors for solar cells and photo detectors, like CdS and PbS, is the Chemical Bath Deposition (CBD) [1][2][3] that is simple, cheap and energy efficient. Chemically deposited CdS window layers have been used in the last years in high efficiency CdTe/CdS solar cells. However, the generally accepted CBD recipes usually utilizes ammonia which is highly volatile, toxic and thus harmful to the environment. Furthermore, the volatility of ammonia changes conditions of reaction solution during the deposition process resulting in irreproducible film properties.Recently in our group an alternative, ammonia-free CBD process was developed for the growth of high quality chalcogenide thin films [3][4][5]. In particular, using only ammonia-free CBD processes we produced CdS/PbS solar cell with energetic efficiency of 1.6 % and quantum efficiency of 25 % [6]. It should be mentioned that PbS as absorber in solar cell is very promising material, being very sensitive to crystallite size so that its band gap can be monitored to great extent. Here we present the results of investigation of CdS and PbS thin films produced by traditional CBD and its variations like SILAR (Successive Ionic Layer Adsorption and Reaction) and PCBD (Photo Chemical Bath Deposition), including some preliminary results of studying of solar cells based on these materials. Experimental methodsTechnique of deposition of CdS thin film was not different from that described in [6]. For SILAR deposition we used 0.5M lead of acetate solution complexed with 0.1M of TEA as a cationic precursor and 0.2M of Thioacetamide C 2 H 5 NS as an anionic precursor. The optimized absorption and reaction time for cationic solution was 60 s and for the anionic one 30 s. A Corning glass substrate was immersed in cationic precursor solutions, and after 60 s the unabsorbed ions were removed by rinsing...

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“…In addition, PbS has been utilised as a photoresistance, diode lasers, humidity and temperature sensors, decorative and solar control coatings [8,9]. Recently, thin-film solar cells based on PbS nanocrystalline thin films are also receiving attention [10,11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polymer–PbS nanocomposite by solar irradiation-induced thermolysis process and its photovoltaic applications

Saikia¹,

Gogoi

Saikia

et al. 2013

Journal of Experimental Nanoscience

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Thin film solar cells of CdS/PbS chemically deposited by an ammonia-free process

Cited by 140 publications

References 22 publications

Surface microstructure, optical and electrical properties of spray pyrolyzed PbS and Zn-PbS thin films for optoelectronic applications

Surface microstructure, optical and electrical properties of spray pyrolyzed PbS and Zn-PbS thin films for optoelectronic applications

PbS Thin Films for Photovoltaic Applications Obtained by Non-Traditional Chemical Bath Deposition

Synthesis of polymer–PbS nanocomposite by solar irradiation-induced thermolysis process and its photovoltaic applications

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