International Journal of Energy Research最新文献

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Deposition and characterization of earth abundant CuZnS ternary thin films by vacuum spray pyrolysis and fabrication of p‐CZS/n‐AZO heterojunction solar cells 通过真空喷雾热解沉积地球上丰富的 CuZnS 三元薄膜并确定其特性，以及制造 p-CZS/n-AZO 异质结太阳能电池

International Journal of Energy Research Pub Date : 2020-07-01 DOI: 10.1002/er.5515

Aabel P, Santhosh Kumar M C

{"title":"Deposition and characterization of earth abundant CuZnS ternary thin films by vacuum spray pyrolysis and fabrication of p‐CZS/n‐AZO heterojunction solar cells","authors":"Aabel P, Santhosh Kumar M C","doi":"10.1002/er.5515","DOIUrl":"https://doi.org/10.1002/er.5515","url":null,"abstract":"We report fabrication of solar cell device with Copper Zinc Sulfide (CZS) thin films as absorber layer. CZS thin films prepared using chemical spray pyrolysis technique at a pressure of 10−3 mbar at different substrate temperatures. Structural, morphological, optical, compositional and electrical properties of as prepared films are investigated. Structural analysis shows crystalline nature with mixed phase containing CuS‐ZnS binary composite. Atomic Force Microscopy analysis shows the average particle size of 88 nm. Value of work function obtained from ultraviolet photoelectron spectroscopy is 4.58 eV. The band gap of the as‐prepared films varies from 1.62 to 2.06 eV. Hall effect measurement proves the p‐type nature for all the deposited films. Samples deposited at 350°C shows carrier concentration of 1021 cm−3 and electrical conductivity of 526 S cm−1. Solar cell device structure of has been fabricated using the CZS sample deposited at 350°C. The cell parameters obtained are Voc = 0.505 V, Isc = 4.97 mA/cm2, FF = 64.28% and η = 1.6 ± 0.05%.","PeriodicalId":506024,"journal":{"name":"International Journal of Energy Research","volume":"84 6","pages":"7778 - 7788"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141205395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvement of comprehensive properties of Na2HPO4·12H2O‐Na2SO4·10H2O hydrate composite 改善 Na2HPO4-12H2O-Na2SO4-10H2O 水合物的综合性能

International Journal of Energy Research Pub Date : 2020-07-01 DOI: 10.1002/er.5456

M. Zheng, Gaiyu Cao, Chaochao Xie

{"title":"Improvement of comprehensive properties of Na2HPO4·12H2O‐Na2SO4·10H2O hydrate composite","authors":"M. Zheng, Gaiyu Cao, Chaochao Xie","doi":"10.1002/er.5456","DOIUrl":"https://doi.org/10.1002/er.5456","url":null,"abstract":"Previous study indicated that the composite of disodium hydrogen phosphate dodecahydrate and sodium sulfate decahydrate at Na2HPO4·12H2O: Na2SO4·10H2O = 9:1 (labeled as B2) exhibits excellent properties as phase change material with supercooling of 4.8°C and crystallization temperature of 28.2°C. In this paper, sodium silicate nonahydrate (Na2SiO3·9H2O) is used as nucleating agent to add to B2 to improve its properties further. It showed that the lowest supercooling of 3.4°C could be obtained by addition of 3.25% Na2SiO3·9H2O to B2, thus it produces a new optimal composite labeled as C (C = B2 + 3.25% Na2SiO3·9H2O); the composite material C has stable thermal performance after 200 cycles with no phase separation. Furthermore, the corrosion of melt C to copper, stainless steel and aluminum is studied comparatively with melt B2. It indicates that melt C has the least corrosion to aluminum due to the inhibition effect of Na2SiO3·9H2O, which differs from that of the corrosion behavior of melt B2 significantly. Moreover, the effects of carboxymethyl cellulose (CMC) and sodium chromate tetrahydrate (Na2CrO4·4H2O) additions to C and B2 are studied comparatively. Experimental results present that (a) addition of 1% CMC to B2 aggravates its corrosion to aluminum and copper, but no effect on stainless steel, (b) addition of 1% Na2CrO4·4H2O to B2 induces a certain inhibition effect on copper and aluminum, but intensifies the corrosion on stainless steel (c) addition of 1% CMC or 1% Na2CrO4·4H2O to C improves the corrosion resistance of stainless steel; addition of CMC or Na2CrO4·4H2O to B2 and C does not change their thermal characteristics, such as supercooling and phase separation, on the whole.","PeriodicalId":506024,"journal":{"name":"International Journal of Energy Research","volume":"76 2","pages":"7396 - 7415"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141209693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1