{"created":"2023-05-15T11:59:43.913358+00:00","id":6300,"links":{},"metadata":{"_buckets":{"deposit":"7c4ac39a-75cc-47b1-a299-adfdcd1ea91a"},"_deposit":{"created_by":18,"id":"6300","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"6300"},"status":"published"},"_oai":{"id":"oai:kyutech.repo.nii.ac.jp:00006300","sets":["6:7"]},"author_link":[],"item_20_date_granted_61":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2019-09-20"}]},"item_20_degree_grantor_59":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"九州工業大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"17104","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_20_degree_name_58":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（工学）"}]},"item_20_description_30":{"attribute_name":"目次","attribute_value_mlt":[{"subitem_description":"1. General introduction||2. Investigation of charge transport in quantum dots and photovoltaic performance in ambient atmosphere||3. Interface engineering of organic-inorganic perovskite solar cells to enhance efficiency and stability in humid air||4. Passivation of grain boundary by squaraine zwitterions for efficient and stable perovskite solar cells||5. Divalent S2- doping in all-inorganic perovskite for enhanced performance and highly stability ||6. General conclusions","subitem_description_type":"TableOfContents"}]},"item_20_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Lead-based optoelectronic materials including PbS and Pb-halide perovskite have been attracted tremendous attention recently. PbS Quantum dots（QDs）are promising semiconductingmaterials for photovoltaics due to their band gap tunability and excellent charge transport properties. Long insulating organic ligands results in weak inter-particle interaction with poor charge transfer. Therefore, we exploited sulfur-crosslinking of PbS QDs to achieve desirable mobility with higher efficiency of solar cells. In addition, lead-based perovskites have recently obtained high power conversion efficiencies of over 23%, which makes perovskite as a potential candidate for highly efficient and easily processable perovskite devices. However, the large number of traps residing in bulk perovskite and at the interface are unavoidable in polycrystalline films, resulting in nonradiative charge recombination, which will influence power conversion efficiency and intrinsic stability applied in heterojunction photovoltaic device. In this thesis, the goal is optimize the interface in device and the polycrystalline perovskite films for better crystalline of perovskite and efficient reduction of trap densities. As a result, the enhanced performance with superior stability was achieved in humid air.  In chapter 1, the background of photovoltaics and their power conversion efficiency are introduced, basic fundamentals of Pb-based light absorbing materials has been presented. In chapter 2, we present a new method for increased QDs mobility and performance of QDs solar cells. In chapter 3, a new sulfur interfacial functionalization is developed, improvement of efficiency and stability is achieved upon interface engineering. In chapter 4, we describes suqaraines passivation on Pb-halide perovskite grain boundaries, contributing to the higher efficiency and stability in humid air. In chapter 5, sulfur-doped all-inorganic perovskite devices are fabricated in ambient atmosphere, leading to superior phase stability and higher efficiency. Finally, general conclusion and future prospects are presented for the Pb-based photovoltaic materials in solar cells application. The architecture, encapsulation of Pb-based solar cells need further study to be applied in commercialization in the future.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_20_description_5":{"attribute_name":"備考","attribute_value_mlt":[{"subitem_description":"九州工業大学博士学位論文 学位記番号:生工博甲第352号 学位授与年月日:令和元年9月20日","subitem_description_type":"Other"}]},"item_20_description_60":{"attribute_name":"学位授与年度","attribute_value_mlt":[{"subitem_description":"令和元年度","subitem_description_type":"Other"}]},"item_20_dissertation_number_62":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第352号"}]},"item_20_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.18997/00007510","subitem_identifier_reg_type":"JaLC"}]},"item_20_text_34":{"attribute_name":"アドバイザー","attribute_value_mlt":[{"subitem_text_value":"馬, 廷麗"}]},"item_20_version_type_63":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"王,  貞","creatorNameLang":"ja"},{"creatorName":"Wang,  Zhen","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-06"}],"displaytype":"detail","filename":"sei_k_352.pdf","filesize":[{"value":"4.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"sei_k_352.pdf","objectType":"fulltext","url":"https://kyutech.repo.nii.ac.jp/record/6300/files/sei_k_352.pdf"},"version_id":"0bf0843b-f456-48cc-a5bc-e39eec09b68d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Quantum dots","subitem_subject_scheme":"Other"},{"subitem_subject":"Perovskite","subitem_subject_scheme":"Other"},{"subitem_subject":"Solar cells","subitem_subject_scheme":"Other"},{"subitem_subject":"Trap density","subitem_subject_scheme":"Other"},{"subitem_subject":"high efficiency","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Study of light harvesting materials for next generation solar cells","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Study of light harvesting materials for next generation solar cells","subitem_title_language":"en"},{"subitem_title":"次世代太陽電池の光吸収材料に関する研究","subitem_title_language":"ja"}]},"item_type_id":"20","owner":"18","path":["7"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2020-01-06"},"publish_date":"2020-01-06","publish_status":"0","recid":"6300","relation_version_is_last":true,"title":["Study of light harvesting materials for next generation solar cells"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2024-01-16T02:11:49.823969+00:00"}