Solid State Sciences最新文献

{"title":"Efficient photocatalytic elimination of antibiotics over metal-free CNx/PANI/graphene sponge system","authors":"Beibei Zhu ,&nbsp;Jie Zhou ,&nbsp;Lubin Ni ,&nbsp;Guowang Diao","doi":"10.1016/j.solidstatesciences.2024.107781","DOIUrl":"10.1016/j.solidstatesciences.2024.107781","url":null,"abstract":"<div><div>Purification of antibiotic wastewater has been recognized as one of the most important issues in the environmental community, for which, developing the metal-free photocatalyst system is an environment-friendly and economic-feasible way. Herein, we designed the metal-free C₃N_x/PANI photocatalyst wrapped around the graphene sponge (CPG) for coupled antibiotic wastewater adsorption and purification. The properties of CPG and their relation with purification performance were investigated using various characterization techniques and photocatalysis evaluation. As a result, we found that the advanced porous structure of graphene sponge can favor wastewater adsorption and photon utilization efficiency due to the crosslink channels with a higher crosslinking density. Meanwhile, the layered structure of CN_x effectively facilitates the transfer of charge carriers while the PANI exhibits high-capacity visible light adsorption. Consequently, after optimization, CPG8 exhibited better photocatalytic activity with a sulfamethazine degradability of 10 mg/L within 40 min. The novel approach and new insights obtained in this work give important guidance for designing advanced photocatalytic systems used in wastewater purification.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107781"},"PeriodicalIF":3.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Additives in silver paste improve the mechanical and thermal stability of thermoelectric modules composed of n-type half-Heusler and p-type oxide materials","authors":"Ryoji Funahashi ,&nbsp;Yoko Matsumura ,&nbsp;Hiroyo Murakami ,&nbsp;Tomoyuki Urata ,&nbsp;Hitomi Ikenishi ,&nbsp;Takashi Sekine","doi":"10.1016/j.solidstatesciences.2024.107780","DOIUrl":"10.1016/j.solidstatesciences.2024.107780","url":null,"abstract":"<div><div>Thermoelectric modules composed of <em>n-</em>type half-Heusler (HH: Ti_0.75Hf_0.25NiSn) and <em>p-</em>type oxide (OX: Ca_2.7Bi_0.3Co₄O₉) materials have been prepared using silver (Ag)-based pastes to form junctions. The maximum power output <em>P</em>_max of the modules depends on the ratio of the cross-sectional area between the HH and the OX materials because of their different electrical and thermal conduction properties. The highest <em>P</em>_max value is obtained 1.7 W for the 16 <em>n</em>- and <em>p</em>-type thermoelectric pairs at the cross-sectional area ratio of <em>n</em>:<em>p</em> = 2:5. The maximum conversion efficiency <em>η</em> _max is 1.1 % at about 500 K of the temperature difference between the hot and the cold sides of the module. Single-junction thermoelectric devices composed of either HH or OX materials and Ag sheet electrodes were prepared using the Ag paste mixed with silver oxide (Ag₂O) or OX (same composition as the <em>p-</em>type material) powders, respectively, to compare the electrical resistance and joining strength. The additives in the Ag paste affected the electrical contact resistance and the joining strength at the junction between the thermoelectric materials and the Ag sheets. The increase in electrical contact resistance due to thermal shock was suppressed by the additives for both <em>n-</em> and <em>p-</em>type devices. Although the addition of Ag₂O powder enhanced the joining strength between the HH material and the Ag sheet before thermal shock, this effect is not clear after thermal shock. Moreover, the additives improve the thermal durability of the HH/OX module against the hot-side temperature above 673 K. The degradation of the module is related to the electrical contact resistance at the junctions.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107780"},"PeriodicalIF":3.4,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142757351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the efficiency of polymer solar cells based on chitosan@PVA@rGO composites via gamma-irradiated treatment of rGO nanoparticles","authors":"M.A. Sebak ,&nbsp;A.K. Aladim ,&nbsp;M.M. Mostafa ,&nbsp;M. Abdelhamid Shahat","doi":"10.1016/j.solidstatesciences.2024.107773","DOIUrl":"10.1016/j.solidstatesciences.2024.107773","url":null,"abstract":"<div><div>Polymer solar cells (PSCs) are growing as attractive contenders for renewable energy technologies given their low cost, adaptability, and environmental sustainability, rendering them valuable in combating climate change. Interestingly, this work investigates the augmentation of photon absorption and overall efficiency in low-cost, effective active layers (ALs) via gamma irradiation treatment, thereby raising the number of active absorption sites. For the first time, novel Chitosan@PVA@rGO (CPG) composite sheets were created as AL materials and treated to varied dosages of in-situ gamma irradiation (0, 10, 20, 30, and 40 KGy) to optimize their microstructural and physicochemical characteristics. The processed ALs were subjected to comprehensive tests, which included J–V variable evaluation as well as evaluations of microstructure, porosity, morphology, contact angle, optical characteristics, and electrochemical impedance spectroscopy (EIS). The findings reveal that the composites' surface properties got better gradually as gamma irradiation dosages grew; peak performance was reached at 30 KGy (75.9 % apparent porosity and roughness parameter Ra = 6.22 μm). Extended gamma irradiation resulted in increased DSSC efficiency, which reached 6.85 % after 10 KGy and 7.63 % after 20 KGy. High-energy gamma photons boosted mobility and decreased resistive limits by reducing carrier recombination and facilitating charge carrier movement inside CPG compounds. This increased the longevity and charge transfer efficiency of the solar cell. After 30 KGy alteration, the CPG AL's optimized efficiency of 8.78 % and J_sc of 20.23 mA/cm² indicate a 44.3 % improvement in efficacy over the pristine material. The insertion of oxygen-enriched free radicals into the CPG structure is responsible for the improvement in photovoltaic efficiency because it creates continuous pathways for fast electron transport. This work provides an innovative perspective on the use of heteroatom-doped ALs in PSCs by highlighting the benefits of co-doping and regulated heteroatom species.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107773"},"PeriodicalIF":3.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"H2O2-assisted Bi3NbO7 loaded on porous carbon for enhancing the photocatalytic degradation of tetracycline","authors":"Yao Wang ,&nbsp;Pengzhan Zhang ,&nbsp;Fan Li ,&nbsp;Liang Zhang ,&nbsp;Bing Xu ,&nbsp;Kangkang Wang ,&nbsp;Zhixian He ,&nbsp;Yuyan Sun ,&nbsp;Shengnan Zhang","doi":"10.1016/j.solidstatesciences.2024.107763","DOIUrl":"10.1016/j.solidstatesciences.2024.107763","url":null,"abstract":"<div><div>Bi₃NbO₇ loaded on porous carbon (BNO/PC) composite materials has been prepared by the in-suit sol-gel method. The photocatalytic efficacy of the BNO/PC composite has been evaluated by degrading tetracycline (TC) in an environment of visible light and hydrogen peroxide. Moreover, the relevant influencing factors of TC degradation efficiency have been explored through a series of condition optimization experiments. UV–vis DRS and PL tests showed that the loading on porous carbon significantly broadens the visible light response range of the catalyst and improves the separation efficiency of photogenerated carriers. Compared with the bare BNO, the specific surface area and average pore diameter of the BNO/PC composite material increased greatly. The optimal sample of 35 % BNO/PC exhibited outstanding visible light response ability and excellent charge separation efficiency. The “cata + H₂O₂+vis” system had the highest photocatalytic activity, with TC degradation reaching 86.9 % after 60 min of visible light illumination. The addition of hydrogen peroxide (H₂O₂) promoted the formation of more powerful active substances. Following this, a mechanism for photocatalytic degradation has been proposed.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107763"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of structural, magnetic, optical and dielectric characteristics of Al-doped MgFe2O4 nanoparticles","authors":"R. Srimathi ,&nbsp;N.V.S.S.Seshagiri Rao ,&nbsp;A. Merlin ,&nbsp;R. Kiruthika ,&nbsp;A. Selvaraj ,&nbsp;Omar H. Abdelkader ,&nbsp;Chandra Sekhar Dash ,&nbsp;S. Revathi ,&nbsp;Anis Ahamed ,&nbsp;Jothi Ramalingam Rajabathar ,&nbsp;M. Sundararajan ,&nbsp;S. Yuvaraj ,&nbsp;L. Rajadurai","doi":"10.1016/j.solidstatesciences.2024.107761","DOIUrl":"10.1016/j.solidstatesciences.2024.107761","url":null,"abstract":"<div><div>In this study, MgAlₓFe₂₋ₓO₄ (0 ≤ x ≤ 0.5) nanoparticles were synthesized via the combustion method to investigate the structural, magnetic, optical, and dielectric effects of Al doping on MgFe₂O₄ ferrite. X-ray diffraction (XRD) analysis confirmed the successful formation of the MgFe₂O₄ crystalline phase, with crystallite sizes ranging from 34 to 45 nm. Field emission scanning electron microscopy (FE-SEM) revealed a spherical morphology, and energy-dispersive X-ray spectroscopy (EDX) confirmed the presence of magnesium, iron, oxygen, and the introduced aluminum. Diffuse reflectance spectroscopy measured an optical band gap between 2.03 and 2.13 eV, indicating Al's influence on electronic properties. Dielectric measurements showed that the Al-doped samples exhibited enhanced dielectric constants and AC conductivity compared to the undoped ferrite, making them promising candidates for optoelectronic, photocatalytic, and energy storage applications. These results highlight the potential of Al-doped MgFe₂O₄ nanoparticles in advancing functional materials for data storage and energy-related technologies.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"159 ","pages":"Article 107761"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142745538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of WO3-GO nanocomposite for hydrogen storage, electrochemical, antibacterial and anticancer applications","authors":"M. Muniyalakshmi ,&nbsp;C. Anantha Prabhu ,&nbsp;D. Thilaga Sundari ,&nbsp;R. Sarika ,&nbsp;D. Silambarasan ,&nbsp;V. Prasanna Venkatesh","doi":"10.1016/j.solidstatesciences.2024.107764","DOIUrl":"10.1016/j.solidstatesciences.2024.107764","url":null,"abstract":"<div><div>Tungsten trioxide nanoparticles (WO₃ NPs), Graphene oxide nanosheets (GO NSs), and WO₃-GO (50 mg and 100 mg) nanocomposites (NCs) were successfully synthesized by using precipitation, modified Hummer's and ultrasonication methods, respectively. Various characterization techniques were used to confirm the formation of individual and composite materials. Hydrogen storage, electrochemical, antibacterial and anticancer properties of the synthesized materials were studied. Formation of the composite was confirmed by XRD, Raman and XPS analyses. Surface area and pore size distribution of WO₃ NPs and WO₃-GO NC were studied by using BET analysis. Hydrogen storage capacity of WO₃-GO 50 mg and WO₃-GO100 mg NCs was found to be 1.05 and 2.08 wt%, respectively. XRD, Raman, elemental and TG analyses were used to examine the adsorption and desorption of hydrogen. WO₃-GO NCs showed higher specific capacitance as compared to WO₃ NPs. Antibacterial activity against <em>E. coli</em>, <em>S. aureus</em> bacteria and anticancer effect against human breast cancer cells of WO₃ NPs and WO₃-GO NC were examined. Based on the studies, it is evident that the inclusion of GO enhanced the hydrogen storage, specific capacitance, antibacterial and anticancer activities of the composite.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107764"},"PeriodicalIF":3.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-assembly of Cucurbit[6]uril-Silicotungstic acid and adsorption properties for cationic dyes","authors":"Liling Zeng,&nbsp;Xianyan Ao,&nbsp;Manli Xu,&nbsp;Yunqian Zhang,&nbsp;Zhu Tao","doi":"10.1016/j.solidstatesciences.2024.107760","DOIUrl":"10.1016/j.solidstatesciences.2024.107760","url":null,"abstract":"<div><div>The development of environmentally friendly adsorbents with low cost and high selectivity is often more able to meet the needs of practical applications. In this study, a novel adsorbent Q[6]-STA capable of rapidly and effectively adsorbing cationic dyes was prepared by self-assembly of cucurbit[6]uril (Q[6]) and silicotungstic acid (STA). Q[6]-STA assembly has good thermal stability and significantly improved specific surface area and porosity. The adsorption capacities of Q[6]-STA for crystal violet (CV), malachite green (MG) and methylene blue (MB) are 475.59, 351.98 and 238.16 mg/g, respectively. The efficient adsorption performance for cation dyes is attributed to the high electronegativity of Q[6]-STA surface. This also makes the adsorbent exhibit high selectivity for cationic dyes in anionic/cationic mixed dyes. Thermodynamic analysis shows that the adsorption procedure of Q[6]-STA is unprompted and endothermal. Electrostatic interaction and π-π conjugation effect are possible adsorption driving forces. In the regeneration experiment, the adsorbent is easy to be separated and desorbed, can be recycled, and has good stability.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107760"},"PeriodicalIF":3.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimony (Sb)-doped PbTe nanostructured alloys with improved optical and thermoelectrical characterizations for clean energy applications","authors":"G.A. Ahmed ,&nbsp;A.M. Adam ,&nbsp;Vyacheslav Khavrus ,&nbsp;Silke Hampel ,&nbsp;E.M.M. Ibrahim","doi":"10.1016/j.solidstatesciences.2024.107762","DOIUrl":"10.1016/j.solidstatesciences.2024.107762","url":null,"abstract":"<div><div>The current work investigates the influence of antimony doping on the morphology, optical behavior, and thermoelectric performance of PbTe nanostructures fabricated using the hydrothermal method. Analyses employing X-ray diffraction (XRD) and Raman spectroscopy techniques asserted the existence of the cubic phase, a defining characteristic of PbTe compounds. The morphology and internal structure of the samples are examined by the scanning and high-resolution transmission electron microscopes. The photoluminescence spectra show a band gap energy around 3.0 eV which is higher than that of the bulk sample. Raman spectra show three peaks corresponding to longitudinal optical (LO) phonon mode and higher-harmonic multiphonon process of PbTe. The PL spectra exhibit a strong peak at the wavelength 401 nm which is ascribed to a recombination of excitons and/or shallowly trapped electron–hole pairs. The thermoelectric properties are studied in the temperature range of 300–500 K and confirm the domination of p-type conduction in the whole temperature range. The electrical conductivity (<em>σ</em>) versus temperature showed thermally activated behavior as the charge carrier mobility is activated and the average carrier kinetic energy increases with temperature. Activation energy was obtained from the plots of Ln <em>σ</em> as a function of 1000/T. The recorded values were found at 62, 50,73 and 34 meV for x = 0, 0.04, 0.06 and 0.08, respectively. The Seebeck coefficients (<em>S</em>) of the synthesized nanostructures revealed a dominance of p-type conduction due to consistently positive S values. The S-T plots exhibit an initial increase in S with temperature at lower values (T &lt; Tₛ). However, a transition occurs at a specific temperature (Tₛ), marked by a step change in S from positive to negative values, followed by a decrease in S with further temperature rise (T &gt; Tₛ). The highest Seebeck coefficient was observed around 196.2 μV/K and recorded at 418 K for the sample of x = 0.04 Sb content. The largest <em>power factor was</em> recorded at 13.6 × 10⁻⁵ W. m⁻¹. K⁻², obtained for pure PbTe at 438 K due to the high value of electrical conductivity.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107762"},"PeriodicalIF":3.4,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of graphene/MWCNT/Ag2Se hybrid thermoelectric materials with different concentrations of PEDOT:PSS for low-temperature applications","authors":"Gökhan Gürlek ,&nbsp;Şeyma Özkan ,&nbsp;Mert Şener ,&nbsp;B. Oğuz Gürses ,&nbsp;Yoldaş Seki","doi":"10.1016/j.solidstatesciences.2024.107759","DOIUrl":"10.1016/j.solidstatesciences.2024.107759","url":null,"abstract":"<div><div>Studies in low-temperature applications in the fields of medicine and wearable technologies are limited to thermoelectric works with commercial poly(3,4-ethylenedioxy-thiophene):polystyrenesulfonate (PEDOT:PSS) aqueous solutions. Unlike other studies, in this study, the effects of adding graphene, multi-walled carbon nanotube (MWCNT) and silver selenide into PEDOT:PSS at different concentrations in the production of semiconductor polymer inks on the thermoelectric properties were examined using Taguchi analysis. In the examination without adding additives, as the ratio of PEDOT:PSS increased from 1 % to 3 % and 5 %, 2.50 and 4.92 times increase in electrical conductivity and 1.19 and 1.49 times increase in the Seebeck coefficient were observed, respectively. P- and n-type inks were produced in three different concentrations using four different materials. According to the results of the study, to obtain p-type material with good performance, the concentration of PEDOT:PSS in the mixture must be high and the Ag₂Se concentration must be low, and also to get a high-performance n-type material, the concentration of Ag₂Se must be as high as the homogeneous mixture allows, and PEDOT:PSS concentration must be low. When the highest Power Factor and Figure of Merit results were evaluated, PPp9 was found for p-type material and PPn2 was found for n-type material, and it is considered that these inks are suitable for printing with 3D printing technology.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107759"},"PeriodicalIF":3.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The approach of increasing incident photon absorption and decreasing charge recombination in solar cells by regulating the bandgap energies of the CdSe0.3S0.7/CdSe photosensitizer layer","authors":"Saeedeh Souri,&nbsp;Maziar Marandi","doi":"10.1016/j.solidstatesciences.2024.107758","DOIUrl":"10.1016/j.solidstatesciences.2024.107758","url":null,"abstract":"<div><div>CdSe_0.3S_0.7/CdSe quantum dot sensitized solar cells are a desirable choice for increasing photovoltaic efficiency due to their high light-harvesting efficiency. In this study, the CdSe_0.3S_0.7 chalcogenide quantum dots were adsorbed onto the TiO₂ NPs mesoporous film using the successive ionic layer adsorption and reaction (SILAR) method with variation cycles ranging from 1 to 7. when the thickness of the CdSe_0.3S_0.7 quantum dots is modified, the quantum dot sensitized solar cell with TiO₂ NPs/CdSe_0.3S_0.7(5c)/ZnS photoanode shows higher short circuit current density (J_SC), open circuit voltage (V_OC) and power conversion efficiency (PCE) values of 17.80 mA/cm², 530 mV and 3.25 %, respectively. The corresponding photoelectrode according to the results of Surface morphology analyses is still suitable for loading other quantum dots, because there are still large pores on the surface. The CdSe QDs were loaded using the Chemical Bath Deposition (CBD) technique at various times from 6 to 15 min' coverage of TiO₂ NPs/CdSe_0.3S_0.7 photoanode. The optimal thickness of the CdSe layer causes its energy levels to be aligned with the other layers and allowing photogenerated carriers to move between bands with a strong driving force before recombination. The cell with the TiO₂NPs/CdSe_0.3S_0.7(5 cycles)/CdSe(12min)/ZnS photoelectrode has the highest J_SC, V_OC and PCE values of 24.70 mA/cm², 580 mV and 6.25 %, respectively. The efficiency increased by 92 % compared to the reference cell, which only included CdSe0.3S0.7 QDs, and the IPCE and APCE curves had higher intensities and spanned a wider range of visible wavelengths. These changes are the result of enhanced light harvesting efficiency.</div></div>","PeriodicalId":432,"journal":{"name":"Solid State Sciences","volume":"158 ","pages":"Article 107758"},"PeriodicalIF":3.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142700270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}