Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals
Today, nanoscrystals are researched and developed very quickly because of their advantages in many areas of life. One of the potential applications is quantum dot-sensitized solar cells. This is a green, clean, environmentally friendly cell, and has been studied by scientists since 2000. In this stu...
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| Format: | Article |
| Language: | English |
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The Royal Society
2024-01-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.231343 |
| _version_ | 1827367957930442752 |
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| author | Thi Tran Anh Tuan Ha Thanh Tung Truong Thi Ngoc Chinh Phan Thanh Hung Huu Phuc Dang |
| author_facet | Thi Tran Anh Tuan Ha Thanh Tung Truong Thi Ngoc Chinh Phan Thanh Hung Huu Phuc Dang |
| author_sort | Thi Tran Anh Tuan |
| collection | DOAJ |
| description | Today, nanoscrystals are researched and developed very quickly because of their advantages in many areas of life. One of the potential applications is quantum dot-sensitized solar cells. This is a green, clean, environmentally friendly cell, and has been studied by scientists since 2000. In this study, we fabricated photoanodes with Cu2+ ions co-doped into cadmium sulfide (CdS) and cadmium selenide (CdSe) nanoscrystals by successive ionic layer adsorption and reaction, and chemical bath deposition methods to improve absorption spectral intensity of films. The results showed that the absorption intensity increased by eight times compared with our previous results on Cu2+ ions doped with CdSe nanoscrystals. The CdS:Cu2+ film is optimized at 2% doping, the efficiency is 4.6819%, and the current density is 27.3501 mA.cm−2, which is higher when compared with the Cu2+ ion only doped into the CdSe quantum dot (19.915 mA.cm−2). In addition, the composition of the photoanode was determined by surface and cross-sectional field-emission scanning electron microscope images, and the structure of the film was determined by X-ray diffraction, energy-dispersive X-ray spectroscopy mapping and X-ray photoelectron spectroscopy. Finally, the film's optical properties were studied by ultraviolet-visible spectroscopy, photoluminescence spectroscopy and electrochemical properties by electrochemical impedance spectroscopy. The results obtained have been discussed and presented in great detail. |
| first_indexed | 2024-03-08T09:23:17Z |
| format | Article |
| id | doaj.art-b558a391b0664ed58dbe13364f6851cb |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-03-08T09:23:17Z |
| publishDate | 2024-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-b558a391b0664ed58dbe13364f6851cb2024-01-31T11:29:29ZengThe Royal SocietyRoyal Society Open Science2054-57032024-01-0111110.1098/rsos.231343Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystalsThi Tran Anh Tuan0Ha Thanh Tung1Truong Thi Ngoc Chinh2Phan Thanh Hung3Huu Phuc Dang4School of Basic Sciences, Tra Vinh University, Tra Vinh Province, VietnamFaculty of Basic Sciences, Vinh Long University of Technology Education, Vinh Long City, VietnamSchool of Basic Sciences, Tra Vinh University, Tra Vinh Province, VietnamSchool of Basic Sciences, Tra Vinh University, Tra Vinh Province, VietnamFaculty of Fundamental Science, Industrial University of Ho Chi Minh City, No. 12 Nguyen Van Bao, Ward 4, Go Vap District, Ho Chi Minh City, 700000, VietnamToday, nanoscrystals are researched and developed very quickly because of their advantages in many areas of life. One of the potential applications is quantum dot-sensitized solar cells. This is a green, clean, environmentally friendly cell, and has been studied by scientists since 2000. In this study, we fabricated photoanodes with Cu2+ ions co-doped into cadmium sulfide (CdS) and cadmium selenide (CdSe) nanoscrystals by successive ionic layer adsorption and reaction, and chemical bath deposition methods to improve absorption spectral intensity of films. The results showed that the absorption intensity increased by eight times compared with our previous results on Cu2+ ions doped with CdSe nanoscrystals. The CdS:Cu2+ film is optimized at 2% doping, the efficiency is 4.6819%, and the current density is 27.3501 mA.cm−2, which is higher when compared with the Cu2+ ion only doped into the CdSe quantum dot (19.915 mA.cm−2). In addition, the composition of the photoanode was determined by surface and cross-sectional field-emission scanning electron microscope images, and the structure of the film was determined by X-ray diffraction, energy-dispersive X-ray spectroscopy mapping and X-ray photoelectron spectroscopy. Finally, the film's optical properties were studied by ultraviolet-visible spectroscopy, photoluminescence spectroscopy and electrochemical properties by electrochemical impedance spectroscopy. The results obtained have been discussed and presented in great detail.https://royalsocietypublishing.org/doi/10.1098/rsos.231343nanocrystalsquantum dot-sensitized solar cellhigh efficiency |
| spellingShingle | Thi Tran Anh Tuan Ha Thanh Tung Truong Thi Ngoc Chinh Phan Thanh Hung Huu Phuc Dang Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals Royal Society Open Science nanocrystals quantum dot-sensitized solar cell high efficiency |
| title | Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals |
| title_full | Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals |
| title_fullStr | Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals |
| title_full_unstemmed | Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals |
| title_short | Enhanced photoelectrochemical performance of quantum dot-sensitized solar cell using Cu2+ co-doped CdS and CdSe nanoscrystals |
| title_sort | enhanced photoelectrochemical performance of quantum dot sensitized solar cell using cu2 co doped cds and cdse nanoscrystals |
| topic | nanocrystals quantum dot-sensitized solar cell high efficiency |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.231343 |
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