Mid-infrared Polarized Emission from Black Phosphorus Light-Emitting Diodes
We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature interna...
Uloženo v:
| Vydáno v: | Nano letters Ročník 20; číslo 5; s. 3651 - 3655 |
|---|---|
| Hlavní autoři: | , , , , , |
| Médium: | Journal Article |
| Jazyk: | angličtina |
| Vydáno: |
United States
American Chemical Society
13.05.2020
|
| Témata: | |
| ISSN: | 1530-6984, 1530-6992, 1530-6992 |
| On-line přístup: | Získat plný text |
| Tagy: |
Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
|
| Abstract | We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature internal and external quantum efficiencies of ∼1% and ∼0.03%, respectively. In our structure, outcoupling losses are dominated by radiation toward the high refractive index substrate. The ability to tune the bandgap of BP and consequently its emission wavelength with layer number, strain, and electric field make these LEDs particularly attractive for heterointegration into mid-infrared photonic platforms. |
|---|---|
| AbstractList | We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature internal and external quantum efficiencies of ∼1% and ∼0.03%, respectively. In our structure, outcoupling losses are dominated by radiation toward the high refractive index substrate. The ability to tune the bandgap of BP and consequently its emission wavelength with layer number, strain, and electric field make these LEDs particularly attractive for heterointegration into mid-infrared photonic platforms. We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature internal and external quantum efficiencies of ∼1% and ∼0.03%, respectively. In our structure, outcoupling losses are dominated by radiation toward the high refractive index substrate. The ability to tune the bandgap of BP and consequently its emission wavelength with layer number, strain, and electric field make these LEDs particularly attractive for heterointegration into mid-infrared photonic platforms.We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated BP/molybdenum disulfide heterojunction. Under forward bias, it emits polarized electroluminescence at λ = 3.68 μm, with room-temperature internal and external quantum efficiencies of ∼1% and ∼0.03%, respectively. In our structure, outcoupling losses are dominated by radiation toward the high refractive index substrate. The ability to tune the bandgap of BP and consequently its emission wavelength with layer number, strain, and electric field make these LEDs particularly attractive for heterointegration into mid-infrared photonic platforms. |
| Author | Wang, Junjia Yang, Mei Kéna-Cohen, Stéphane Rousseau, Adrien Low, Tony Francoeur, Sébastien |
| AuthorAffiliation | Department of Engineering Physics Department of Electrical and Computer Engineering |
| AuthorAffiliation_xml | – name: Department of Electrical and Computer Engineering – name: Department of Engineering Physics |
| Author_xml | – sequence: 1 givenname: Junjia orcidid: 0000-0003-0872-4794 surname: Wang fullname: Wang, Junjia organization: Department of Engineering Physics – sequence: 2 givenname: Adrien surname: Rousseau fullname: Rousseau, Adrien organization: Department of Engineering Physics – sequence: 3 givenname: Mei surname: Yang fullname: Yang, Mei organization: Department of Engineering Physics – sequence: 4 givenname: Tony orcidid: 0000-0002-5759-5899 surname: Low fullname: Low, Tony organization: Department of Electrical and Computer Engineering – sequence: 5 givenname: Sébastien orcidid: 0000-0002-6129-7026 surname: Francoeur fullname: Francoeur, Sébastien organization: Department of Engineering Physics – sequence: 6 givenname: Stéphane orcidid: 0000-0001-5065-2750 surname: Kéna-Cohen fullname: Kéna-Cohen, Stéphane email: s.kena-cohen@polymtl.ca organization: Department of Engineering Physics |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/32286837$$D View this record in MEDLINE/PubMed |
| BookMark | eNqFkD1PwzAQhi0Eoh_wDxDKyJLij8RO2KCUD1FEB5gtx3Fal9QutjPAr8dVWwYGmO6ke5_T3TMAh8YaBcAZgiMEMboU0o-MMLZVIYyghDAv0AHoo5zAlJYlPvzpi6wHBt4vIYQlyeEx6BGMC1oQ1gdPz7pOtWmccKpOZrYVTn_FbrLS3mtrksbZVXLTCvmezBbWrxfWdT6Z6vkipDEUgjbz5FbbWvkTcNSI1qvTXR2Ct7vJ6_ghnb7cP46vp6kgWRFS1NQ5pazMqlJgWmFIaFE3ArIiQ7FQUVdlqaTADKEGKcmYkERRgqqMSVYxMgQX271rZz865QOPx0rVtsIo23mOSQnj6zmFMXq-i3bVStV87fRKuE--FxADV9uAdNZ7pxoudRAhfh6c0C1HkG9s82ib723zne0IZ7_g_f5_MLjFNtOl7ZyJtv5GvgH5r5h2 |
| CitedBy_id | crossref_primary_10_1039_D1NR00318F crossref_primary_10_1063_5_0005641 crossref_primary_10_1007_s12274_020_3126_9 crossref_primary_10_3390_polym15040947 crossref_primary_10_1002_smtd_202401550 crossref_primary_10_1016_j_matdes_2023_112547 crossref_primary_10_1002_cnma_202500182 crossref_primary_10_1002_smll_202301949 crossref_primary_10_1088_2053_1583_acc59b crossref_primary_10_1002_smtd_202100567 crossref_primary_10_1039_D2NR03725D crossref_primary_10_1021_acsphotonics_5c00353 crossref_primary_10_1038_s41586_021_03701_1 crossref_primary_10_1007_s11030_022_10379_8 crossref_primary_10_1002_admt_202201897 crossref_primary_10_1002_aelm_202001174 crossref_primary_10_1016_j_infrared_2024_105668 crossref_primary_10_1007_s12274_022_5008_9 crossref_primary_10_1002_adom_202001991 crossref_primary_10_1002_lpor_202100322 crossref_primary_10_1002_aelm_202400124 crossref_primary_10_1080_10408398_2023_2227899 crossref_primary_10_1126_science_adq2977 crossref_primary_10_1002_lpor_202000399 crossref_primary_10_1007_s11468_021_01426_5 crossref_primary_10_1016_j_revmat_2025_100059 crossref_primary_10_1021_acsnano_5c02908 crossref_primary_10_1021_acsami_5c03415 crossref_primary_10_1002_apxr_202400079 crossref_primary_10_1021_acs_nanolett_5c01829 crossref_primary_10_1038_s41467_024_53125_4 crossref_primary_10_1088_2752_5724_ac49e3 crossref_primary_10_1016_j_carbon_2022_01_013 crossref_primary_10_1103_PhysRevLett_127_186401 crossref_primary_10_1002_advs_202103036 crossref_primary_10_1073_pnas_2021077118 crossref_primary_10_3788_PI_2023_R03 crossref_primary_10_1002_lpor_202000587 crossref_primary_10_1039_D0NR04537C crossref_primary_10_1007_s11432_024_4033_8 crossref_primary_10_1002_adma_202005254 crossref_primary_10_1002_advs_202103507 crossref_primary_10_1002_flm2_70000 crossref_primary_10_1002_adfm_202210268 crossref_primary_10_1002_adom_202202495 crossref_primary_10_1002_adfm_202514101 crossref_primary_10_1002_adma_202208054 crossref_primary_10_1016_j_mtphys_2022_100895 crossref_primary_10_1002_lpor_202400703 crossref_primary_10_1007_s40820_023_01211_5 crossref_primary_10_1038_s44310_024_00028_3 crossref_primary_10_13005_bpj_2296 crossref_primary_10_1063_5_0123810 crossref_primary_10_1016_j_jqsrt_2022_108271 crossref_primary_10_3390_nano12172996 |
| Cites_doi | 10.1021/nl502075n 10.1038/ncomms14474 10.1063/1.4885215 10.1021/acsnano.7b03994 10.1063/1.2339036 10.1038/ncomms5475 10.1021/nl502892t 10.1038/nnano.2014.26 10.1038/nnano.2014.35 10.1063/1.2171647 10.1038/nnano.2014.25 10.1038/nnano.2016.171 10.1038/ncomms5458 10.1021/acs.nanolett.7b00897 10.1021/acsphotonics.6b00320 10.1038/nnano.2014.14 10.1063/1.2741147 10.1038/nmat4205 10.1002/adma.201503466 10.1021/nl500171v 10.1038/s41467-018-07558-3 10.1126/science.264.5158.553 10.1038/s41467-018-03218-8 10.1088/2053-1583/1/2/025001 10.1103/PhysRevB.90.075434 10.1002/9780470142561.ch1 10.1126/science.aaa6486 10.1021/nl400516a 10.1039/C4CS00257A 10.1021/nn502553m 10.1021/acs.nanolett.8b04041 10.1038/ncomms9572 10.1021/acs.nanolett.5b04594 |
| ContentType | Journal Article |
| DBID | AAYXX CITATION NPM 7X8 |
| DOI | 10.1021/acs.nanolett.0c00581 |
| DatabaseName | CrossRef PubMed MEDLINE - Academic |
| DatabaseTitle | CrossRef PubMed MEDLINE - Academic |
| DatabaseTitleList | MEDLINE - Academic PubMed |
| Database_xml | – sequence: 1 dbid: NPM name: PubMed url: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed sourceTypes: Index Database – sequence: 2 dbid: 7X8 name: MEDLINE - Academic url: https://search.proquest.com/medline sourceTypes: Aggregation Database |
| DeliveryMethod | fulltext_linktorsrc |
| Discipline | Engineering |
| EISSN | 1530-6992 |
| EndPage | 3655 |
| ExternalDocumentID | 32286837 10_1021_acs_nanolett_0c00581 b277529556 |
| Genre | Journal Article |
| GroupedDBID | - .K2 123 55A 5VS 7~N AABXI ABMVS ABPTK ABUCX ACGFS ACS AEESW AENEX AFEFF ALMA_UNASSIGNED_HOLDINGS AQSVZ BAANH CS3 DU5 EBS ED ED~ F5P GNL IH9 IHE JG JG~ K2 PK8 RNS ROL TN5 UI2 VF5 VG9 W1F X --- -~X 4.4 6P2 AAHBH AAYXX ABBLG ABJNI ABLBI ABQRX ACBEA ADHLV AHGAQ CITATION CUPRZ GGK NPM 7X8 |
| ID | FETCH-LOGICAL-a348t-1fd566794b9a26b20368dfa07841fa06adb99eca2711f1ec77ac3e631b47c7b73 |
| IEDL.DBID | ACS |
| ISICitedReferencesCount | 80 |
| ISICitedReferencesURI | http://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=Summon&SrcAuth=ProQuest&DestLinkType=CitingArticles&DestApp=WOS_CPL&KeyUT=000535255300093&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D |
| ISSN | 1530-6984 1530-6992 |
| IngestDate | Fri Jul 11 16:59:01 EDT 2025 Thu Jan 02 22:58:07 EST 2025 Sat Nov 29 06:17:11 EST 2025 Tue Nov 18 22:37:55 EST 2025 Thu Aug 27 22:10:37 EDT 2020 |
| IsPeerReviewed | true |
| IsScholarly | true |
| Issue | 5 |
| Keywords | heterostructures black phosphorus light-emitting diodes mid-infrared emitters 2D materials |
| Language | English |
| License | https://doi.org/10.15223/policy-029 https://doi.org/10.15223/policy-037 https://doi.org/10.15223/policy-045 |
| LinkModel | DirectLink |
| MergedId | FETCHMERGED-LOGICAL-a348t-1fd566794b9a26b20368dfa07841fa06adb99eca2711f1ec77ac3e631b47c7b73 |
| Notes | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ORCID | 0000-0002-5759-5899 0000-0001-5065-2750 0000-0002-6129-7026 0000-0003-0872-4794 |
| PMID | 32286837 |
| PQID | 2390153560 |
| PQPubID | 23479 |
| PageCount | 5 |
| ParticipantIDs | proquest_miscellaneous_2390153560 pubmed_primary_32286837 crossref_citationtrail_10_1021_acs_nanolett_0c00581 crossref_primary_10_1021_acs_nanolett_0c00581 acs_journals_10_1021_acs_nanolett_0c00581 |
| ProviderPackageCode | JG~ 55A AABXI GNL VF5 7~N VG9 W1F ACS AEESW AFEFF .K2 ABMVS ABUCX IH9 BAANH AQSVZ ED~ UI2 |
| PublicationCentury | 2000 |
| PublicationDate | 20200513 2020-05-13 2020-May-13 |
| PublicationDateYYYYMMDD | 2020-05-13 |
| PublicationDate_xml | – month: 05 year: 2020 text: 20200513 day: 13 |
| PublicationDecade | 2020 |
| PublicationPlace | United States |
| PublicationPlace_xml | – name: United States |
| PublicationTitle | Nano letters |
| PublicationTitleAlternate | Nano Lett |
| PublicationYear | 2020 |
| Publisher | American Chemical Society |
| Publisher_xml | – name: American Chemical Society |
| References | ref9/cit9 ref6/cit6 ref3/cit3 ref27/cit27 ref18/cit18 ref11/cit11 ref25/cit25 ref16/cit16 ref29/cit29 ref32/cit32 ref23/cit23 ref14/cit14 ref8/cit8 ref5/cit5 ref31/cit31 ref2/cit2 ref28/cit28 ref20/cit20 ref17/cit17 ref10/cit10 ref26/cit26 ref19/cit19 ref21/cit21 ref12/cit12 ref15/cit15 ref22/cit22 ref13/cit13 ref33/cit33 ref4/cit4 ref30/cit30 ref1/cit1 ref24/cit24 ref7/cit7 |
| References_xml | – ident: ref6/cit6 doi: 10.1021/nl502075n – ident: ref27/cit27 doi: 10.1038/ncomms14474 – ident: ref24/cit24 doi: 10.1063/1.4885215 – ident: ref31/cit31 doi: 10.1021/acsnano.7b03994 – ident: ref1/cit1 doi: 10.1063/1.2339036 – ident: ref15/cit15 doi: 10.1038/ncomms5475 – ident: ref25/cit25 doi: 10.1021/nl502892t – ident: ref8/cit8 doi: 10.1038/nnano.2014.26 – ident: ref14/cit14 doi: 10.1038/nnano.2014.35 – ident: ref2/cit2 doi: 10.1063/1.2171647 – ident: ref10/cit10 doi: 10.1038/nnano.2014.25 – ident: ref26/cit26 doi: 10.1038/nnano.2016.171 – ident: ref13/cit13 doi: 10.1038/ncomms5458 – ident: ref22/cit22 doi: 10.1021/acs.nanolett.7b00897 – ident: ref21/cit21 doi: 10.1021/acsphotonics.6b00320 – ident: ref7/cit7 doi: 10.1038/nnano.2014.14 – ident: ref3/cit3 doi: 10.1063/1.2741147 – ident: ref12/cit12 doi: 10.1038/nmat4205 – ident: ref19/cit19 doi: 10.1002/adma.201503466 – ident: ref11/cit11 doi: 10.1021/nl500171v – ident: ref30/cit30 doi: 10.1038/s41467-018-07558-3 – ident: ref4/cit4 doi: 10.1126/science.264.5158.553 – ident: ref9/cit9 doi: 10.1038/s41467-018-03218-8 – ident: ref20/cit20 doi: 10.1088/2053-1583/1/2/025001 – ident: ref23/cit23 doi: 10.1103/PhysRevB.90.075434 – ident: ref33/cit33 doi: 10.1002/9780470142561.ch1 – ident: ref28/cit28 doi: 10.1126/science.aaa6486 – ident: ref5/cit5 doi: 10.1021/nl400516a – ident: ref17/cit17 doi: 10.1039/C4CS00257A – ident: ref16/cit16 doi: 10.1021/nn502553m – ident: ref32/cit32 doi: 10.1021/acs.nanolett.8b04041 – ident: ref18/cit18 doi: 10.1038/ncomms9572 – ident: ref29/cit29 doi: 10.1021/acs.nanolett.5b04594 |
| SSID | ssj0009350 |
| Score | 2.583138 |
| Snippet | We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated... |
| SourceID | proquest pubmed crossref acs |
| SourceType | Aggregation Database Index Database Enrichment Source Publisher |
| StartPage | 3651 |
| Title | Mid-infrared Polarized Emission from Black Phosphorus Light-Emitting Diodes |
| URI | http://dx.doi.org/10.1021/acs.nanolett.0c00581 https://www.ncbi.nlm.nih.gov/pubmed/32286837 https://www.proquest.com/docview/2390153560 |
| Volume | 20 |
| WOSCitedRecordID | wos000535255300093&url=https%3A%2F%2Fcvtisr.summon.serialssolutions.com%2F%23%21%2Fsearch%3Fho%3Df%26include.ft.matches%3Dt%26l%3Dnull%26q%3D |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| journalDatabaseRights | – providerCode: PRVABC databaseName: American Chemical Society Journals customDbUrl: eissn: 1530-6992 dateEnd: 99991231 omitProxy: false ssIdentifier: ssj0009350 issn: 1530-6984 databaseCode: ACS dateStart: 20010101 isFulltext: true titleUrlDefault: https://pubs.acs.org/action/showPublications?display=journals providerName: American Chemical Society |
| link | http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV3JasMwEBXdDu2h-5IuwYVeelAaSa4lHUsXCk1LoAu5GW0mgWKHOOmhX9-R4nSDEHKyMJKwRjOeNxrNDEJnIjEA8mOLtbQUx1YxLHXiML-UlIqMahJiq95a_OlJdDqy_WMo_vfgU3KhTNnIVV7AMoaNpvF18MDaWaaAdH2phqvr558kuyxUZAUhBpNIingSKjdlFq-QTPlXIU1BmUHb3G3M-52baL3CldHVmBG20ILLt9Har2yDO-jhsWcxMNTA3zmP2t6m7X1C6xa22p-ZRT7UJAonelG7W5T9bjEYlVErpBqBTuGGdHTTK6wrd9Hr3e3L9T2uailgxWIxxCSzANxA-LRUNNHe_Shsppre7QiPRFktpTOKckIy4gznyjCXMKJjbrjmbA8t5UXuDlCUCWMSyyWghyx2XAkbO0BJyhFLm0arGjoHWqSVLJRpcHNTkvqXEwKlFYFqiE2In5oqKbmvjfE-YxT-HtUfJ-WY0f90sq8pkNS7RFTuilGZ0nDkwwD21dD-eMO_Z4RfnUjAfj-cYz1HaJV6g9ynd2XHaGk4GLkTtGI-hr1yUEeLvCPqgWe_AL566q8 |
| linkProvider | American Chemical Society |
| linkToHtml | http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3dSxwxEB9EC9YH29qqp7ZdoS99SL0ke5vkUfzA4nkc1BbflnwtHsiuXO588K93kttV-yDSPm0ISUhmJpuZTOY3AN9kYVHJzx0xyjGSO82JMoUnYqAYkxUzNMVW_RmK0UheXanxEgy6WBicRMCRQnLiP6EL0INYV-u6wdXMfvRtTIeHRs_KAOUn2lyHR7-esHZ5SsyKexktIyXzLmLuhVHiuWTD3-fSC8pmOnRO3_3ndN_DeqtlZocLsfgAS77egLVn2IMf4fxi4giK1zS-QM_G0cKd3GPpBBkfb9CyGHiSpfu9bHzdhNvrZjoP2TABj2Cj9F46O540zodP8Pv05PLojLSZFYjmuZwRWjlU43ArGqVZYaIzUrpK96MTEj-FdkYpbzUTlFbUWyG05b7g1OTCCiP4JizXTe23IauktYUTCnWJKvdCS5d71Jm0p471rdE9-I60KNudEcrk9Ga0jJUdgcqWQD3gHQ9K20KUx0wZN6_0Io-9bhcQHa-03-_YWyJJo4NE176Zh5KlCyCOSmAPthZ8fxwRf3yyQGt-5x_W8xVWzy4vhuXw5-h8F96yaKpH4Fe-B8uz6dx_hjf2bjYJ0y9JgB8Az8vyNg |
| linkToPdf | http://cvtisr.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwpV1LTxsxELYQIFQOQGkL4dFupV56cIntZW0fERBRkUaRChW3lV8rIlW7UZxw4Ncz42woHBCqOO3Ksq31eGb9jcf-hpBvqnAA8nNPrfac5t4Iqm0RqDzWnKuKW5buVv3py8FA3dzo4ZNUX_AREXqKKYiPVj32VcswwI6wvDZ1AyOa_ug6TIkHjs_KMQafEBWd_v7HtytSclawZ_COtMoXt-Ze6AXXJhefr00vAM608PQ23_DJW2SjRZvZyVw93pOlUG-T9ScchB_I5a-Rp6BmEzyJng3R0x3dw9s5KADupGV4ASVL-3zZ8LaJ49tmMotZPxGQQKV0bjo7GzU-xI_kund-dXpB2wwL1IhcTSmrPMA5MEmrDS8sBiWVr0wXg5HwKIy3WgdnuGSsYsFJaZwIhWA2l05aKT6R5bqpwy7JKuVc4aUGTFHlQRrl8wDYyQTmeddZ0yHfQRZlayGxTMFvzkosXAiobAXUIWIxD6VrqcoxY8bfV1rRx1bjOVXHK_W_Lqa4BJFioMTUoZnFkqeNIAFgsEN25nP_2CP8AFUBXv3ef4znC1kbnvXK_s_B5T55x9FjR_5XcUCWp5NZOCSr7m46ipPPSYcfAIvV9LA |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Mid-infrared+Polarized+Emission+from+Black+Phosphorus+Light-Emitting+Diodes&rft.jtitle=Nano+letters&rft.au=Wang%2C+Junjia&rft.au=Rousseau%2C+Adrien&rft.au=Yang%2C+Mei&rft.au=Low%2C+Tony&rft.date=2020-05-13&rft.issn=1530-6992&rft.eissn=1530-6992&rft.volume=20&rft.issue=5&rft.spage=3651&rft_id=info:doi/10.1021%2Facs.nanolett.0c00581&rft.externalDBID=NO_FULL_TEXT |
| thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1530-6984&client=summon |
| thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1530-6984&client=summon |
| thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1530-6984&client=summon |