Designation:E1040−10StandardSpecificationforPhysicalCharacteristicsofNonconcentratorTerrestrialPhotovoltaicReferenceCells1ThisstandardisissuedunderthefixeddesignationE1040;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisspecificationdescribesthephysicalrequirementsforprimaryandsecondaryterrestrialnonconcentratorphoto-voltaicreferencecells.Areferencecellisdefinedasadevicethatmeetstherequirementsofthisspecificationandiscali-bratedinaccordancewithTestMethodE1125orTestMethodE1362.1.2Referencecellsareusedinthedeterminationoftheelectricalperformanceofphotovoltaicdevices,asstatedinTestMethodsE948andE1036.1.3Tworeferencecellphysicalspecificationsaredescribed:1.3.1Small-CellPackageDesign—Asmall,durablepack-agewithalowthermalmass,wideopticalfield-of-view,andstandardizeddimensionsintendedforphotovoltaicdevicesupto20by20mm,and1.3.2Module-PackageDesign—Apackageintendedtosimulatetheopticalandthermalpropertiesofaphotovoltaicmoduledesign,butelectricconnectionsaremadetoonlyonephotovoltaiccellinordertoeliminateproblemswithcalibrat-ingseriesandparallelconnectionsofcells.Physicaldimen-sionsarenotstandardized.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E772TerminologyofSolarEnergyConversionE948TestMethodforElectricalPerformanceofPhotovol-taicCellsUsingReferenceCellsUnderSimulatedSun-lightE1036TestMethodsforElectricalPerformanceofNoncon-centratorTerrestrialPhotovoltaicModulesandArraysUsingReferenceCellsE1125TestMethodforCalibrat...