K. Yoshino, Himeka Tominaga, Akiko Ide, K. Nishioka, T. Naka
{"title":"Annealing effects on Ga‐doped ZnO thin films grown by atmospheric spray pyrolysis using diethylzinc solution","authors":"K. Yoshino, Himeka Tominaga, Akiko Ide, K. Nishioka, T. Naka","doi":"10.1002/pssc.201600177","DOIUrl":"https://doi.org/10.1002/pssc.201600177","url":null,"abstract":"Polycrystalline a-axis oriented Ga-doped ZnO thin film could be grown on glass substrate by a conventional atmospheric spray pyrolysis at 150 °C using diethylzinc-based solution. The n-type Ga-doped ZnO thin film had a resistivity of 1.5 × 10−3 Ω cm, a carrier concentration of 2.0 × 1020 cm−3 and a mobility of 20.0 cm2 (Vs)−1 at an optimal Ga content of 2 wt.% upon hydrogen annealing at 450 °C. It was assumed that an increase of the n-type carrier concentration is due to increase oxygen vacancies by reacting hydrogen and oxygen in ZnO from X-ray photoelectron spectroscopy.","PeriodicalId":20065,"journal":{"name":"Physica Status Solidi (c)","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82117815","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}
H. Anzai, K. Ichiki, E. Schwier, H. Iwasawa, M. Arita, H. Sato, K. Shimada, H. Namatame, M. Taniguchi, A. Mitsuda, H. Wada, K. Mimura
{"title":"Observation of the\u0000 c\u0000 ‐\u0000 f\u0000 hybridization effect in valence‐transition system EuPtP","authors":"H. Anzai, K. Ichiki, E. Schwier, H. Iwasawa, M. Arita, H. Sato, K. Shimada, H. Namatame, M. Taniguchi, A. Mitsuda, H. Wada, K. Mimura","doi":"10.1002/pssc.201600185","DOIUrl":"https://doi.org/10.1002/pssc.201600185","url":null,"abstract":"We study the electronic structure of EuPtP, which exhibits two first-order valence transitions at T1 = 247 K and T2 = 201 K, using angle-resolved photoemission spectroscopy. Below T2, we observe an energy gap at the crossing point of the bulk Eu 4f and conduction bands. The shape of band dispersions is described by a hybridization-band picture based on the periodic Anderson model. Our results demonstrate the c-f hybridization effect in the low-temperature phase of EuPtP.","PeriodicalId":20065,"journal":{"name":"Physica Status Solidi (c)","volume":"31 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91476107","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}